Stage 4 High Output Kit +185 HP
The Stage 4 High Output Kit for 1996-2003 H1 will make a considerable difference to the overall drivability and longevity of your H1 Hummer. The basis of this performance upgrade is our unique proprietary & copyrighted RapTorq ECM. This kit instantly adds up to 155 horsepower with an upgraded cooling system! The Stage 4 Wake Up Kit provides exclusive, full range Dynamic Spectrum Tuning of air/fuel ratio, ignition advance, boost control, High flow exhaust, upgraded cooling system, and various other parameters for ultimate power gains and optimal mileage. This kit is designed to add a whole new level of performance gains to your H1!
- • Power gains across entire power band, not just at full throttle
- • Improves throttle response, acceleration, and low-end torque
- • Provides performance gains up to 140 horsepower
- • Boost Control
- • Increased fuel pressure
- • Equalizer Head Cooling
- • 4″ Performance Exhaust
- • Off-Road Pipe
- • RapCool
- • RapJet
Stage 4 – This stage is for mildly modified H1 vehicles. Fuel, Air (intake/outtake), Boost Control, Cooling, and Timing-Curves are modified and designed to burn lower-octanes at peak efficiency. The increased fuel pressure, High flow intake/exhaust, and cooling system will dramatically improve performance gains with optimal mileage at these peak horsepower gains. Drivers can use low-cost regular octane fuel for potential mileage gains or mid-grade and higher-fuel for optimal performance gains.
**Available in Stage 1, 2, 3, & 4! Dyno tested to ensure top horsepower and drivability.
Off Road Pipe
RapTorq High Performance ECM
Our unique proprietary & copyrighted Predator RapTorq ECM was engineered over a 22 month span with specific testing and development by our in-house Predator Motorsports engineering team.
During the development phases of our RapTorq ECM, our engineering team included a full evaluation of all available ECM programs by our competitors. While it remains standard practice to only modify the factory GM fuel-delivery curve. Our RapTorq ECM features a completely re-engineered “fuel-delivery curve &start-of-injection timing curve”. This design is engineered to optimize the H1’s combustion chamber providing peak efficiency and rapid power gains across the engines entire power band.
Our RapTorq ECM programming provides rapid throttle response from light-throttle to full heavy-throttle performance power. In conjunction with power gains, Fuel Economy is also improved on an average of 10-20% throughout all operational conditions. The primary goal was to create superior drivability with a maximum power curve within the OEM GM exhaust-gas temperature limits.
Power increased by 115hp & 156ft/lbs of torque providing Rapid Torque & Horsepower gains!
RapBoost High Performance Turbo Boost Controller
Our Predator RapBoost is a naturally suited mate to our RapTorq ECM programming or a fully stock H1 and is designed to compliment the operational characteristics of the factory turbo.
The RapBoost is a purely mechanical with a fully adjustable waste gate controller. Designed to be a direct bolt-on replacement for the OEM factory boost control canister used on H1 turbochargers.
The RapBoost works in conjunction with the factory waste gate valve mechanism to create a smooth and rapid working turbine inlet-pressure relief valve. This type of control allows retention of all available turbine drive pressure up to the predetermined pressure bypass point, providing maximum turbocharger performance along with effective shaft-speed / boost control.
Characteristic of the RapBoost design is its easy installation and simple calibration.
Power increased by 21hp & 27ft/lbs of torque providing Rapid Torque & Horsepower gains!
RapFlow High Performance Fuel Lifter
Our Predator RapFlow Fuel Lifter Pump is designed to be a direct bolt-on replacement for the low-quality factory lifter pump that is unreliable and prone to low-pressure fuel flow. The RapFlow Fuel Lifter Pump is suited perfectly for the high demands of the H1 Hummer where Rapid fuel flow, Strength, and Reliability are paramount.
The RapFlow High Performance Fuel Lifter Pumps feature a unique valve design that improves flow quantity and quality. The high-volume inlet and outlet surpasses the capacity of conventional OEM factory models. Produces 6 psi and does not require a regulator.
**We also offer a Performance Fuel Pressure Test Kit. This will determine if you are receiving adequate fuel pressure. We recommend checking fuel pressure on your stock lifter pump every 6 months or 6,000 miles.
K&N Air Filter
H1 Performance air filters from K&N will help your Hummer run better!
- Designed to increase horsepower & torque for the 1996-2003 Hummer H1
- Washable & Reusable
- This K&N H1 air filter lasts the lifetime of your vehicle
Equalizer Head Cooling
Our Predator Equalizer Head Cooling System rapidly Cools and Equalizes heat within the heads and block. Improving engine cooling distribution and longevity. The Equalizer Head Cooling System is designed to improve the poor coolant flow conditions that exists within the OEM factory cooling system. Poor coolant flow throughout the block and heads can cause extremely high operating temperatures in the the block and portions of the cylinder heads. These unequal temperatures create heat-stress conditions that can lead to cracking within the cylinder walls. Potentially causing a higher risks of engine failure.
By generating proper coolant flow throughout the block and heads, our Equalizer Head Cooling System reduces heat-stress and high temperatures. Reducing heat-stress in these castings will dramatically reduce the risk of engine failure and help prevent cracking/breaking of cylinder walls. The Equalizer system is vital to a reliable long lasting engine.
**Each system includes a patented proportioning valve system which equalizes pressure for even cooling and crossover manifold for proper coolant flow.
4″ Performance Exhaust
What can a 4” Predator Performance Exhaust System do for your H1? Dramatically improve your H1’s tone, increase in horsepower, and Fuel Economy.
Having that extra boost in power can also make your life a lot more fun in off-road terrain. Giving you that extra push you need to keep from getting stuck. If you live at a high elevation and often find your H1 struggling a little to climb steep roads, the extra power added by our 4” Performance Exhaust System can help you out there too.
Choose from Aluminum or Black Powder Coated Finish
**Lifetime Warranty. Designed for 1996-2004 Hummers.
The Off-Road Pipe removes your catalytic converter for off-road performance gains and constructed of high quality stainless steel.
Power increased by 10hp & 15ft/lbs of torque providing Rapid Torque & Horsepower gains!
**For off-road and testing purposes only.
RapCool High Performance PMD Isolator
Our Predator RapCool PMD Isolator system was created to end the issues associated with the factory location of the PMD (Pump Mounted Driver). The factory mount-location for the PMD is on the side of the fuel injection pump. This location does not adequately remove heat from the PMD, resulting in a constant high temperature condition. Testing has shown that the factory PMD begins to degrade when operating temperature exceeds 150*F and complete failure is imminent.
The RapCool PMD Isolator system features a new Stanodyne PMD module, which is mounted onto our Isolator plate and mounted completely outside the engine compartment. This keeps the PMD quite cool for premium performance and engineered to provide an exceptionally long service life along with improved drivability and even better fuel economy.
RapJet High Performance Fuel Injector Set
We are proud to offer the “ONLY” High Performance Fuel Injector Set for the 6.5TD Hummer and HMMWV. Engineered to give your Hummer the correct amount of fuel for both stock H1’s and H1’s equipped with our legendary RapTorq Performance ECM.
Our RapJet Injector Set provides rapid throttle response, crisp light-throttle performance, and stronger heavy-to-full throttle power.
Power increased by 32hp & 47ft/lbs of torque providing Rapid Torque & Horsepower gains!
**Each RapJet set includes an installation kit for a trouble free install.
Cooling Upgrade Level – 7
Cooling increase is based on a scale of 1-10, ten providing the best possible increase in cooling over stock.
When placing your order please include your vin number in the comments section of the order form. Also, a $550.00 ECM & $300 Injector Set core charge applies. Core charges will be refunded within 30 days once the core has been received.
**We highly recommend installing & testing your Raptorq ECM before returning the core.
**Limited lifetime warranty and a full 30 day money back guarantee
Please contact Predator for more information on our line of RapTorq Performance Upgrades.