Stage 4 | 563KW

Mustang GT Stage 4 | 563KW

The Mustang 5.0L Stage 4 upgrade is meticulously crafted to deliver exceptional performance enhancements through a combination of high-quality components. The upgrade process begins with our trained technician installing the Harrop high-flow cold air intake system, which significantly improves airflow and complements the aggressive sound of your engine. Following this, we fit Harrop's acclaimed FDFI-2650 intercooled supercharger system, designed to provide a substantial boost in power and efficiency by greatly enhancing the engine's breathing capabilities.

To maximize exhaust flow and overall performance, we complete the package with the installation of a set of 1 7/8" 4-into-1 headers, paired with high-flow metallic catalytic converters. This setup ensures optimal exhaust evacuation and minimizes back pressure. Complementing these components, we fit a 3-inch stainless steel cat-back exhaust system that not only enhances flow but also delivers a captivating exhaust note that underscores the performance upgrades.

To further support the increased performance, we include a fuel pump upgrade and billet oil pump gears to ensure that your engine receives increased fuel delivery and reliable engine lubrication under high performance conditions.

Once all components are installed, we perform a custom tune of your vehicle’s ECU on the dynamometer. Using the latest Ford ECU tuning software, we fine-tune the engine for maximum power, torque, and fuel efficiency, ensuring that all upgraded parts work together seamlessly.

The upgrade process is finalized with thorough road testing, which allows us to make any necessary final adjustments to optimize your vehicle's overall performance and drivability. At the conclusion of the upgrade, we provide you with a dyno graph that compares the power and torque figures before and after the HPF upgrade, clearly demonstrating the significant improvements achieved.

Like all HPF upgrade packages, the Stage 4 upgrade is modular, giving customers the flexibility to incorporate further enhancements in the future without incurring unnecessary costs. HPF is dedicated to delivering maximum performance through high-quality components while ensuring that reliability and drivability are consistently maintained throughout the upgrade process.

Package Includes

1 x Before dyno run 
1 x Harrop FDFI-2650 intercooled supercharger kit (10PSI)
1 x Harrop cold air intake system 
1 x Set of 4 into 1 headers
1 x Set of high flow cats
1 x Dual 3" catback exhaust 
1 x Billet oil pump gears and lower crank gear
1 x DW in tank fuel pump upgrade
1 x HPF custom dyno tune 
1 x Labour to fit, tune and test

Key Features

Take your already healthy Muscle Car to Super Car Performance! The Harrop Supercharger kit merges seamlessly and looks like a factory fitted option!!

Notes

• *Please note: Power figures are estimates only and actual figure's may vary based on each specific vehicle.
• We recommend all vehicles coming to HPF for tuning run 98 Octane fuel. Please contact us if you have a need to use different fuel.
• Quoted power figures are approximate and calculated at the flywheel, based on results with the 6.2 lt. LSA power plant at Harrop HQ dynomometer.
• Modifications such as this package require the vehicle to be in excellent mechanical order.
• We advise against increasing the power output substantially on high kilometer engines, if your engine has in excessive of 150,000kms please contact us to discuss options.
• Whilst every attempt is made to ensure prices listed online are correct, they are subject to change at any time.
• Additional parts may be required in some cases depending on the condition of the vehicle. Cost of these parts and additional labor required may incur additional cost.
• Final price may vary dependent on specific options chosen.
• Some automatic transmission models may require a cooler kit at additional cost.
• Balance of new car driveline warranty available at additional cost.
• Images are for illustration purposes only

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