JEEP 5.7L HPF STAGE 1 | 310KW

The JEEP 5.7L Stage-1 upgrade starts with our trained technician fitting a high flow K&N Cold air intake system which K&N guarantees to increase power and torque buy increasing the engines breathing capabilities (and they sound great!) along with a Pacemaker dual 3” cat-back exhaust system to again increase the engines breathing and improve the overall V8 experience. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in a day and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold air intake - The K&N Cold Air Induction (CAI) system features a large diameter free-flowing intake path to ensure maximum performance from your Hemi powered vehicle. It features a large surface area pod style air filter to assist in minimizing the restriction of air flow and is contained in a fabricated housing which seals against the underside of the vehicles bonnet to reduce the intake of hot air from inside the engine bay.
• Catback Exhaust system – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF chooses Pacemaker Exhausts for the Jeep, SRT & Trackhawk platform. Made in Richmond, South Australia for almost half a century, Pacemaker are synonymous with performance and quality. Pacemaker build a quality stainless steel dual 3” system and some model specific phat tips. The sound is deep and meaningful.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.

300 6.4L | HPF STAGE 2 | 385KW

The 300 SRT 6.4L Stage 2 upgrade starts with our trained technician fitting a high flow cold air intake system which outflows the standard air intake by around 31%, 4-1 stainless steel extractors, high flow metallic cats & a dual 3" stainless steel catback exhaust to increase the engine's breathing capabilities. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in 2 days and at the end of this upgrade you will provided with a dyno graph detailing the power & torque increase of your vehicle.

BRZ / 86 HPF STAGE 2 | 175KW

The BRZ/86 Stage 2 upgrade starts with our trained technician fitting a a complete Perrin cold air intake. We then add the PSR Headers and an Invidia Q300 (Invidia N1 is a no cost option) stainless steel catback exhaust to increase the overall engine's breathing capabilities. We then tune your vehicles ECU on the dyno in real time utilizing the latest Subaru ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

PLEASE NOTE : The Horsepower Factory (HPF) has no affiliation with Toyota or Subaru and service offered by our company may impact on your vehicle manufacturer warranty as well as the fuel efficiency and emissions of your vehicle.

GEN-F LSA Stage 2 | 500KW

The HPF LSA Stage-2 upgrade starts with our trained technician fitting a Harrop Cold Air Induction system with a high flow, serviceable air filter element and a 160-degree thermostat to the engines cooling system, the same as Stage-1. Stage-2 goes further adding a higher boost Griptec 65mm (2.55”) supercharger drive pulley, ZPE hub and coupling upgrade which is complimented by a set of high flow fuel injectors. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and torque and to optimize fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicles performance and driveability. This is all completed in a day and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold air intake - The Harrop Cold Air Induction (CAI) system features a large diameter free-flowing intake path to ensure maximum performance from your LSA powered vehicle. It features a large surface area pod style air filter to assist in minimizing the restriction of air flow and is contained in a fabricated housing which seals against the underside of the vehicles bonnet to reduce the intake of hot air from inside the engine bay.
• Thermostat - HPF offers this premium quality 160-degree thermostat for LSA Applications. This is a direct drop in with no modifications needed and includes the rubber seal. Reducing engine coolant temperature will help produce more horsepower and improve your performance and driveability. The thermostat is an easy to install component and requires no modifications.
• Supercharger pulley - The High boost supercharger pulley includes the ZPE Pulley Hub system for the factory GM LSA engine. The pulley is made from billet 7075-T6 aerospace grade aluminium, stronger and harder than 6061 T6. This pulley is equipped with GripTec® - a unique micro machining technology. This technology allows the maximum grip force to be applied to the component and belt without damaging your belt. Made in California, USA.
• Fuel injectors - HPF only uses premium fuel injectors from Excess Fuel Injectors for the LSA platform. All Excess Injectors are tested on a custom built test bench to J1832 standards under a strict testing protocol in a purpose-built facility in Melbourne’s south eastern suburbs. Every injector set is dynamically flow matched within 1% and deadtime matched within 2%. This saves dyno time tuning injectors and allows us to get a perfect result every time. These injectors come with a lifetime guarantee; ask for more info.

FG Boss V8 | HPF Stage 2 | 315kW

The Ford FG XR8, FG GT BOSS V8 Stage 2 upgrade starts with our trained technician fitting a high flow air box with reusable pod air filter and a dual cat back exhaust to increase the engine's breathing capabilities. We then tune your vehicle's ECU on the dyno utilizing the latest Ford ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages this package is modular in that it allows the customer to add to the package minimizing the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

FGX / FPV S/C 5.0L | HPF STAGE 2 | 450KW

The FGX /FPV GS, GT & GT-P Supercharged Boss 5.0L Stage 2 upgrade starts with our trained technician fitting a high performance stainless steel cat back exhaust system and high flow air filter to increase the engine's breathing capabilities. We then custom tune your vehicle's ECU on the dyno utilizing the latest HP Tuners Ford ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages this package is modular in that it allows the customer to add to the package minimising the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

FG/G6E/FGX XR6 Turbo | HPF STAGE 2 | 360KW

The HPF Stage 2 upgrade for the Ford FG, G6E, FGX XR6 Turbo starts with our trained technician modifying the air box and fitting a high flow air filter to increase the engine's breathing capabilities. We then increase the fuel supply available to the engine with high flow performance injectors and high flow fuel pump and swap out the restrictive factory catalytic converter for a 3" Highflow Cat pipe and Catylitic converter. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Ford ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages this package is modular in that it allows the customer to add to the package minimizing the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

WRX 08 HPF STAGE 2 | 210KW

The Subaru WRX MY08 Stage 2 upgrade starts with our trained technician fitting a cold air intake with high flow air filter and stainless steel 3" dump pipe & high flow cat to increase the engine's breathing capabilities. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Subaru ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages the Stage 2 package is modular in that it allows the customer to add to the package minimising the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

VE 6.0L HPF Stage 2 | 310KW

The HPF VE 6.0 Stage-2 upgrade starts with our trained technician fitting a Harrop ‘Over the Radiator’ Cold Air Induction system with a high flow, serviceable air filter element the same as Stage-1. Stage-2 goes further adding a higher flowing – and much better sounding – Pacemaker dual 3” catback (dual 2.5” for wagon) exhaust system. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and torque and to optimize fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in a day and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold Air Intake - The Harrop ‘Over the Radiator’ Air Induction (OTR) system features a large diameter free-flowing intake path to ensure maximum performance from your LS3 powered vehicle. It features a large surface area panel air filter mounted directly in front of the engines throttle body and is designed to draw straight in from the grille opening. This design assists in minimizing the restriction of air flow and eliminates the intake of hot air from inside the engine bay.
• Catback Exhaust System – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF works closely with our 2 major exhaust suppliers Pacemaker and Manta. The advantage we find of having two suppliers is we remain flexible in terms of price, availability and product selection. Pacemaker offers a 5-year warranty and are built in Richmond, South Australia while Manta offers a 10-year warranty and has manufacturing in both Belmont, Western Australia and Melton, Victoria.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.

VF 6.0L HPF Stage 2 | 310KW

The HPF VF 6.0 Stage-2 upgrade starts with our trained technician fitting a Harrop ‘Over the Radiator’ Cold Air Induction system with a high flow, serviceable air filter element the same as Stage-1. Stage-2 goes further adding a higher flowing – and much better sounding – Pacemaker dual 3” catback (dual 2.5” for wagon) exhaust system. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and torque and to optimize fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in a day and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold Air Intake - The Harrop ‘Over the Radiator’ Air Induction (OTR) system features a large diameter free-flowing intake path to ensure maximum performance from your LS3 powered vehicle. It features a large surface area panel air filter mounted directly in front of the engines throttle body and is designed to draw straight in from the grille opening. This design assists in minimizing the restriction of air flow and eliminates the intake of hot air from inside the engine bay.
• Catback Exhaust System – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF works closely with our 2 major exhaust suppliers Pacemaker and Manta. The advantage we find of having two suppliers is we remain flexible in terms of price, availability and product selection. Pacemaker offers a 5-year warranty and are built in Richmond, South Australia while Manta offers a 10-year warranty and has manufacturing in both Belmont, Western Australia and Melton, Victoria.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.

VFII 6.2L HPF Stage 2 | 335KW

The HPF LS3 Stage-2 upgrade starts with our trained technician fitting a Harrop ‘Over the Radiator’ Cold Air Induction system with a high flow, serviceable air filter element the same as Stage-1. Stage-2 goes further adding a higher flowing – and much better sounding – Pacemaker dual 3” catback (dual 2.5” for wagon) exhaust system. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and torque and to optimize fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in a day and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold Air Intake - The Harrop ‘Over the Radiator’ Air Induction (OTR) system features a large diameter free-flowing intake path to ensure maximum performance from your LS3 powered vehicle. It features a large surface area panel air filter mounted directly in front of the engines throttle body and is designed to draw straight in from the grille opening. This design assists in minimizing the restriction of air flow and eliminates the intake of hot air from inside the engine bay.
• Catback Exhaust System – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF works closely with our 2 major exhaust suppliers Pacemaker and Manta. The advantage we find of having two suppliers is we remain flexible in terms of price, availability and product selection. Pacemaker offers a 5-year warranty and are built in Richmond, South Australia while Manta offers a 10-year warranty and has manufacturing in both Belmont, Western Australia and Melton, Victoria.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.

HSV 6.2L HPF Stage 2 | 350KW

The HPF LS3 Stage-2 upgrade starts with our trained technician fitting a Harrop ‘Over the Radiator’ Cold Air Induction system with a high flow, serviceable air filter element the same as Stage-1. Stage-2 goes further adding a higher flowing – and much better sounding – Pacemaker dual 3” catback (dual 2.5” for wagon) exhaust system. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and torque and to optimize fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in a day and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold Air Intake - The Harrop ‘Over the Radiator’ Air Induction (OTR) system features a large diameter free-flowing intake path to ensure maximum performance from your LS3 powered vehicle. It features a large surface area panel air filter mounted directly in front of the engines throttle body and is designed to draw straight in from the grille opening. This design assists in minimizing the restriction of air flow and eliminates the intake of hot air from inside the engine bay.
• Catback Exhaust System – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF works closely with our 2 major exhaust suppliers Pacemaker and Manta. The advantage we find of having two suppliers is we remain flexible in terms of price, availability and product selection. Pacemaker offers a 5-year warranty and are built in Richmond, South Australia while Manta offers a 10-year warranty and has manufacturing in both Belmont, Western Australia and Melton, Victoria.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.

FG FPV F6/FGX XR6 Sprint | HPF STAGE 2 | 385KW

The HPF Stage 2 upgrade for the Ford FG FPV F6, FGX XR6 Sprint starts with our trained technician modifying the air box and fitting a high flow air filter to increase the engine's breathing capabilities. We then increase the fuel supply available to the engine with high flow performance injectors. We then swap out the restrictive factory catalytic converter with a high flow 3" version. We also upgrade the wastegate control of the turbo to better control boost. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Ford ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF packages this package is modular in that it allows the customer to add to the package minimizing the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

JEEP 6.4L HPF STAGE 2 | 385KW

The JEEP SRT8 6.4L Stage-2 upgrade starts with our trained technician fitting a high flow K&N Cold air intake system which K&N guarantees to increase power and torque buy increasing the engines breathing capabilities (and they sound great!). We continue with a Pacemaker dual 3” cat-back exhaust system to again increase the engines breathing and improve the overall V8 experience system the same as Stage-1. Stage-2 goes further adding 4-1 headers (extractors) and high flow metallic catalytic converters. We then custom tune your vehicle's ECU on the dyno utilizing the latest ECU tuning software to maximize power and fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is all completed in a day and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle. Flex Fuel (E85) is an option, talk to one of our Sales Representatives.

• Cold air intake - The K&N Cold Air Induction (CAI) system features a large diameter free-flowing intake path to ensure maximum performance from your Hemi powered vehicle. It features a large surface area pod style air filter to assist in minimizing the restriction of air flow and is contained in a fabricated housing which seals against the underside of the vehicles bonnet to reduce the intake of hot air from inside the engine bay.
• Catback Exhaust system – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF chooses Pacemaker Exhausts for the Jeep SRT & Trackhawk platform. Made in Richmond, South Australia for almost half a century, Pacemaker are synonymous with performance and quality. Pacemaker build a quality stainless steel dual 3” system and some model specific phat tips. The sound is deep and meaningful.
• Headers & High flow cats – Also known as extractors, we chose a 4-1 design as over the years 4-1 headers have proven their advantage over the tri-y design. 4-1 Headers are offered in a few different sizes for different engine applications or modification levels. The catalytic converters chosen are higher flow and feature either 100 cpi or 200 cpi (cell per inch). The catalyst matrix is coated metal so they are built to last. Given the performance the Hemi V8 is capable of producing we have the choice between Pacemakers 2” 4-1 headers for blown applications and 1-7/8” Headers for naturally aspirated applications all matched to their 3” high flow cats. The catback exhaust bolts to the catalytic converters.
• Dyno Tuning – By optimizing the engine tune parameters in the vehicles PCM to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy. Late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. Engines fitted with a turbocharger from factory are much easier to enhance as increasing boost pressure by tuning works extremely well.

STI 06-07 HPF STAGE 2 | 245KW

The Subaru STI MY06-07 Stage 2 upgrade starts with our trained technician fitting a cold air intake with high flow air filter and stainless steel 3" dump pipe & high flow cat to increase the engine's breathing capabilities. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Subaru ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages the Stage 2 package is modular in that it allows the customer to add to the package minimising the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

WRX 06-07 HPF STAGE 2 | 210KW

The Subaru WRX MY06-07 Stage 2 upgrade starts with our trained technician fitting a cold air intake with high flow air filter and stainless steel 3" dump pipe & high flow cat to increase the engine's breathing capabilities. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Subaru ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages the Stage 2 package is modular in that it allows the customer to add to the package minimising the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

WRX 09-14 HPF STAGE 2 | 235KW

The Subaru WRX MY09-14 Stage 2 upgrade starts with our trained technician fitting a cold air intake with high flow air filter and stainless steel 3" dump pipe & high flow cat to increase the engine's breathing capabilities. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Subaru ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages the Stage 2 package is modular in that it allows the customer to add to the package minimising the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

WRX 15-21 HPF STAGE 2 | 230KW

The Subaru WRX MY15-21 Stage 2 upgrade starts with our trained technician fitting a cold air intake with high flow air filter and stainless steel 3" dump pipe & high flow cat to increase the engine's breathing capabilities. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Subaru ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages the Stage 2 package is modular in that it allows the customer to add to the package minimising the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

STI 08-18 | HPF STAGE 2 | 263KW

The Subaru WRX MY08-18 Stage 2 upgrade starts with our trained technician fitting a cold air intake with high flow air filter and stainless steel 3" dump pipe & high flow cat to increase the engine's breathing capabilities. We then tune your vehicle's ECU on the dyno in real time utilizing the latest Subaru ECU tuning software to maximize power, torque and fuel efficiency.

We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. At the end of this upgrade we will provide you with a dyno graph comparing the before and after power & torque increase the HPF upgrade has made to your vehicle.

Like all HPF upgrade packages the Stage 2 package is modular in that it allows the customer to add to the package minimising the requirement to spend money twice when and if further upgrades are desired. HPF strive to bring you maximum performance with high quality components while still maintaining reliability and driveability.

PATROL Y62 STAGE 2 | 330KW

The HPF Y62 Patrol Stage-2 upgrade starts with our trained technician fitting a BMC high flow, serviceable air filter element and a Hurricane big boy 3.5” 409 Stainless steel ‘catback’ exhaust system which is more in line with what a 300kw V8 deserves the same as Stage-1. Stage-2 goes further adding a set of Hurricane Headers 4 into 1, 1-7/8” Headers (extractors) and high flow metallic catalytic converters. We then custom tune your vehicle's PCM (Powertrain Control Module) on the dyno utilizing the latest ECU tuning software to maximize power and torque and to optimize fuel efficiency. We complete the upgrade process by testing your vehicle on the road to make final adjustments, optimizing your vehicle's performance and driveability. This is completed in 2 days and at the end of this upgrade you will be provided with a dyno graph detailing the power & torque increase of your vehicle.

• Air filter element – From our testing there is no gain in performance by replacing the standard Nissan air box as it does not pose a restriction even in supercharged applications. Additionally, an aftermarket air box may also mess with the laminar flow of the air through the air flow meter which can cause tuning / driveability issues. We use a high flow serviceable air filter like a BMC or K&N filter to minimise filter restriction and it has the ability to be cleaned and reused almost indefinitely.
• Dyno Tuning (Y62) – By optimizing the engine tune parameters in the vehicles PCM (Powertrain Control Module) to suit 98 octane fuel, we are able to increase both power and torque and maximise fuel economy however it’s worth noting that late model naturally aspirated cars are generally tuned very well from the manufacturer so depending on the vehicle platform mechanical parts to improve the engines intake & exhaust flow may need to be added to really get good gains. In its simplest form, to make more power by tuning any petrol engine we need to add ignition timing and optimise the air / fuel ratio (AFR). The PCM in the current Patrol is super smart and is constantly trying to add ignition timing to maximise engine efficiency. The PCM relies on knock sensors to determine how much timing it can add, it can also determine the quality of fuel and will adjust ignition timing automatically and seamlessly so running a chip device as an alternative to proper PCM tuning with so called selectable 98, 95, or 91 octane tunes is redundant as the factory PCM can already alter its tuning parameters for differing fuel octanes. It’s been widely rumoured that the air / fuel ratio at wide open throttle (WOT) in the Y62 Patrol is rich but its relevance has been larger overstated as this only happens above 130kph in attempt to protect the catalytic converters during sustained high-power requirements, we do not alter this unless aftermarket headers and cats are installed.
• Catback Exhaust system – A ‘Catback’ system is basically all the parts of the exhaust after the catalytic converters. It’s the section of exhaust where all the mufflers are placed and by using larger diameter pipe and high flowing mufflers more performance and better sound is achieved. HPF works closely with our 2 major exhaust suppliers Pacemaker and Manta but for the Y62 we use Hurricane Headers out of Moorebank NSW as they build a single 3.5” system which is unique to the Y62 market. Hurricane Headers are Australian made and owned and have been since their inception over 45 years ago.
• Headers & High flow cats – Also known as extractors, we chose a 4-1 design as over the years 4-1 headers have proven their advantage over the tri-y design. 4-1 Headers are offered in a few different sizes for different engine applications or modification levels. The catalytic converters chosen are higher flow and feature either 100 cpi or 200 cpi (cell per inch). The catalyst matrix is coated metal so they are built to last. The catback exhaust bolts to the catalytic converters.