Our Stage 3 High Output Kit for your 1996-2003 H1 Hummer will make a considerable difference to the overall power output, cooling and drivability of your H1 Hummer.

The basis of the performance upgrade is the RapTorq Performance Computer system. This kit is designed to add a whole new level of performance with an additional 155 hp, on average, and improved cooling.

Stage 3 High Output Kit +155 HP  Package Includes:

RapTorq - The RapTorq programming provides rapid throttle response, crisp light-throttle performance and strong heavy-to-full throttle power.

Rap Boost - a purely mechanical, fully adjustable waste gate controller, designed to be a direct, bolt-on replacement for the factory boost control canister used on H1 turbocharger.

RapFlow - Our RapFlow Fuel Lifter Pump is suited perfectly for the high demands of the H1 HUMMER where rapid fuel flow, strength and relibility are paramount.

Air Filter - replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration.

Equalizer - designed to correct the poor coolant flow condition that exists in the 6.5 Hummer which is the cause of the majority of engine failures.

Exhaust - high performance exhaust system that replaces the restrictive stock muffler and tail pipe.

Off Road Pipe - The Off-Road Pipe removes your catalytic converter for off-road and testing purposes only.

RapCool Cooling Upgrade (7) - created to end the drivability / reliability issues associated with the factory, injection pump-mount location of the PMD (Pump Mounted Driver).
Book Time 11 Hours