Stage 1

Grenadier B58 3.0L TD | Stage 1

The HPF Stage 1 Performance Package is designed to enhance the performance, drivability and character of the INEOS Grenadier while maintaining the rugged reliability and touring capability that define the platform. Combining a premium Milltek exhaust system with HPF's custom dyno tuning expertise, this package unlocks additional performance while delivering a more engaging driving experience both on and off the road.

At the core of the package is a Milltek GPF-Back Exhaust System, featuring a resonated configuration and premium GT90 polished exhaust tips. Engineered to improve exhaust flow while maintaining refinement, the Milltek system provides a deeper, more purposeful exhaust note without excessive cabin drone, making it perfectly suited to long-distance touring and daily driving.

Once the exhaust system is installed, our technicians perform a bespoke HPF Custom ECU Reprogram, developed and refined on our in-house dyno. The calibration optimises boost control, fuel delivery, throttle response and torque management, unlocking improved performance and drivability throughout the rev range.

Every vehicle undergoes comprehensive dyno and road testing to ensure reliability, performance and consistency under real-world conditions. Upon completion, you'll receive a before and after dyno graph showcasing the gains achieved through the HPF Stage 1 Package.

The result is a Grenadier that feels stronger, more responsive and more enjoyable to drive, whether navigating city streets, towing heavy loads or exploring remote off-road destinations.

Package Includes

1 x Milltek GPF back exhaust system (resonated, GT90 polished tips)
1 x Custom ECU - reprogram
1 x Before and after dyno graph
1 x All labour to fit / tune / test

Key Features

Featuring a Milltek GPF-Back Exhaust System with GT90 polished tips and HPF Custom Dyno Tuning, the Stage 1 Package delivers improved throttle response, enhanced torque delivery and a refined performance exhaust note.

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