Stage 1 Supercharger Kit

The JHM Stage 1 Supercharger Kit is engineered to elevate the performance of Audi S4 models equipped with the 4.2L V8 40v engine, specifically for the B6 (2003-2005) and B7 (2005.5-2009) chassis. This kit is intended for racing competition use ONLY and is not street legal. It requires a specialized ECU tune, which can be performed using a JHM Tuning-Flashing Cable and the JHM Flashing Server. Customers have the option to self-flash their vehicle or have it done at a JHM-authorized dealer. A proprietary JHM POWER CONNECT Cable is mandatory for this process; generic USB Vag Com cables will not work. Installation involves a direct bolt-on process, with all necessary bolts, hardware, and clamps included. The kit also features various hoses, including boost hoses, an auxiliary hose, and a breather/diverter Y-hose, along with an auto tensioner assembly and worm-drive clamps. Please note that certain components, like the boost hose and inlet hose, are specifically designated as "NOT FOR PUBLIC SALE" and may have order quantity minimums. A customer review highlights a "visceral connection," "extraordinary" power, and an "incredible" shifting experience after installing the JHM supercharger kit along with other JHM components.