The JHM Stage 1 Supercharger is hands down the most cost effective supercharger solution for the B8-S5 4.2L. With common bolt-ons and supporting hardware, JHM have repeatably achieved high 11 second quarter mile runs, with 118MPH trap speeds!! With performance like that, your seemingly unsuspecting two door German coupe becomes a definite force to be reckoned with.
The JHM Stage 1 Supercharger Kit is the foundation for the different power levels that will be available for the B8-S5 4.2L. With the addition of a smaller pulley, an intercooler, fueling upgrades, or even a built motor along with our 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 in-house, 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 B8-S5 4.2L will make 100-120 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 B8-S5 4.2L 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 V-3 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 S5.
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 insure the longevity and durability of the belt and pulleys on the S5, the OEM belt and pulleys are upgraded to a 6-rib system with JHM's 6-Rib Accessory Belt Conversion Kit. This Conversion Kit features 3 pulleys specific to this JHM system, including an alternator pulley, a precision balanced crank pulley, and a supercharger pulley good for 7-9 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 S5, 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 add-ons for their supercharger system that will allow you to use more of the supercharger's power capabilities. Stage 1+ (Intercooled with upgraded fueling and a smaller pulley, safe for stock motors). Stage 2 will require a built motor for engine safety and longevity.
- 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 & Outlet Hose Kit, made from Reinforced Silicone
- JHM Pre-modified Passenger Side Bumper Bracket
- JHM Crankcase Ventilation System
- JHM MAF Extension
- JHM Stage 1 Supercharger ECU Tune
- K&N Conical Air Filter
- Spark Plugs, JHM Supercharger Kit Specific (25K-30K Mile Interval)
- All bolts, hardware, clamps, and miscellaneous items required for a complete installation
- JHM Stage 1 Supercharger kit fits all 2008-2012 B8-S5 4.2L - Early and Late Intake Manifold, Automatic and Manual Transmission.
For more information on this system, and others from this Third Party Manufacturer, click the following link: JH Motorsports.