The JHM Stage 1 Supercharger is hands down the most cost effective supercharger solution for the B7-RS4. With common bolt-ons and supporting hardware, mid to high 11 second quarter mile runs have been achieved, with 117-118MPH trap speeds!! With performance like that, your seemingly unsuspecting four-door German sedan becomes a definite force to be reckoned with.The JHM Stage 1 Supercharger Kit is the foundation for the different power levels available for the B7-RS4. With the addition of a smaller pulley, an intercooler, fueling upgrades, or even a built motor along with a software upgrade, you can build off of the Stage 1 kit to meet your power output needs. This Stage 1 Kit features the same supercharger head unit that was on JHM's own record setting 2007 B7-RS4 4.2L FSI that ran an incredible 10.7 second quarter mile at 130 mph. That was at full weight, a complete interior, a complete exhaust system, and street tires!
FEATURES AND SPECIFICATIONS
The JHM Stage 1 Supercharger Kit for the B7-RS4 will make 80 to 100 wheel horsepower (WHP) over your car's current configuration. Your current modifications, the dynamometer (dyno) used, ambient temperature, elevation, and octane of gas will all effect the exact amount of power gains.
This System features a Vortech V-3 Si centrifugal supercharger head unit that is good for up to 775 horsepower! (Unchecked, this amount of power would be too much for a stock RS4 motor. Through our extensive development and testing process, we were able to limit the output of the supercharger to levels safe for the stock motor through hardware and tuning.) The V3 Si supercharger is a self-lubricated unit featuring quiet, helical-cut gears. The only time you hear noise from the blower is at idle and low speeds. At wide open throttle, you hear nothing but the raw power coming from your JHM Supercharged RS4.
The JHM Stage 1 Supercharger Kit also includes JHM Supercharger mounting brackets that were designed and made at JHM's California facility. These brackets are made from reinforced steel, laser cut, and are powder coated black for a clean installation.
In order to ensure the longevity and durability of the belt and pulleys on the RS4, the OEM belt and pulleys are upgraded to a 6-rib system with the JHM 6-Rib Accessory Belt Conversion Kit which includes an Automatic Belt-Tensioner Upgrade. This Conversion Kit features 3 JHM Supercharger Kit specific pulleys including an alternator pulley, a precision zero-balanced crank pulley, and a Supercharger Pulley good for 5 to 7 pounds of boost (exact boost levels will vary depending on your exhaust system, other modifications, and environmental factors).
Due to the compact engine bay of the V8 RS4, the Vortech Supercharger head unit had to be located off of the passenger side of the motor, below the headlight. To do this, a number of different proprietary parts had to be created, including the silicone inlet and outlet hoses. The inlet hose is made from reinforced silicone to prevent collapse under vacuum, and takes in air through a JHM supercharger kit specific, high flow K&N conical air filter.
JHM are currently working on system add-ons that will allow you to use more of the supercharger's power capabilities. Stage 1+ is an Intercooled system with upgraded fueling and a smaller pulley that is still safe for stock motors. Stage 2 will require a built motor for engine safety and longevity. Please contact JHM directly for more information regarding Stages 1+ and 2 as well as a JHM Built Motor for your B7-RS4.
- Vortech V-3 Si Centrifugal Supercharger
- JHM Laser Cut Supercharger Mounting Brackets
- JHM 6-Rib Pulley Upgrade, Accessory Belt Conversion, and Automatic Tensioner Kit
- JHM Inlet Hose, made from Reinforced Silicone
- JHM Silicone Outlet Hose
- JHM Crankcase Ventilation System
- JHM MAF Housing
- K&N Conical Air Filter
- JHM Stage 1 Supercharger ECU Tune
- Spark Plugs, JHM Supercharger Kit Specific
- JHM A/C Receiver-Drier Relocation Kit including new hoses and JHM Modified A/C Lines for easy, bolt-on fitment
- All bolts, hardware, clamps, and miscellaneous items required for a complete installation
- JHM Stage 1 Supercharger kit fits all 2006-2008 B7-RS4s - Sedan, Cabriolet, or Avant.
For more information on this system, and others from this Third Party Manufacturer, click the following link: JH Motorsports.