Rimmer Supercharging Systems

Practical Jeep Power
From the Supercharging Authority

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Jeep FAQ

Supercharger system for Jeep port-fuel-injected 2.5 liter four-cylinder and 4.0 liter six-cylinder vehicles

Rather than reach for the biggest horsepower numbers at unreasonable or unsustainable engine speeds, Rimmer Engineering has developed its RSS to be powerful and practical in "real world" situations. The emphasis is on substantial torque and horsepower gains in the RPM ranges you actually use when you operate your Jeep. These benefits, while providing useful and exciting improvements in the everyday use of your vehicle, are even more important when operating off-road or in slippery conditions, and especially in four-wheel drive. Plus, if you drive at high altitudes, the effect is truly dramatic, restoring the performance lost to "thin air".

Like a bigger engine or a lower gear ratio, more available torque at low and medium engine speeds improves overall driveability and enhances smooth and precise control when you need it most. But unlike an engine swap or a lower axle ratio, there is only an extremely small weight increase and virtually no fuel mileage penalty in normal use. The Rimmer Supercharging System also meets all current exhaust emissions certification requirements.

Installing a bigger engine is a complex and difficult undertaking and a change to a lower gear ratio will obviously diminish highway performance. There’s only one easy way to get reliable and substantial power increases throughout the engine’s operating range, thus strengthening off-road, street and highway performance -- install a Rimmer Supercharging System .

Rimmer Supercharging Systems are available for port-fuel-injected 2.5 liter four-cylinder and 4.0 liter six-cylinder engines in Wranglers, Cherokees, and Grand Cherokees.

Installation is "bolt-on" in character, no internal engine modifications are required. The positive-displacement, mechanically-driven supercharger provides boost from just above idle all the way to redline. Unlike a turbocharger, there is no underhood heat buildup, annoying "lag effect" or sudden onset of boost pressure -- power is right there when you need it and linear in its delivery for precise throttle control. Horsepower and torque increases average 30%.

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