The RSK04 Fueling Kit is available separately from the turbo kits for enthusiasts that have already installed K04 turbochargers and have been waiting for a properly designed and programmed hardware and software package to allow the full potential of their K04 turbos to be unleashed.

While the RS4 turbos are quite capable of producing good power, the rest of the RS4 components, such as the fuel injectors and MAF (Mass Air Flow sensor), are run near to their limits at anything over 400hp. In addition, the RS4 fuel injectors are not the correct spray pattern for the S4 cylinder heads.

The AWE Tuning RSK04 system uses a much larger proprietary Bosch injector than the RS4 spec, as well as our own MAF housing design and injected molded laminar flow screen, with a special silicone hose connecting the MAF to the Y-pipe. On 2000 S4s, our turbo kit replaces the inherently problematic Bosch MAF sensor with the much more relaible 2001-02 Hitachi MAF.