Audi RS4 B7Jim “Jimbo” Williams has been trying to extract more power from his Audi RS4 B7.

RS Fabrications manufacture Stainless Steel De-Cat Pipes that replace the original OEM Catalytic Converters. These are a direct replacement for the factory installed items and can be fitted in 4 Hour to the vehicle.

Prior to the installation Jimbo’s RS4 was running 398.4 BHP with figures obtained with re-mapping and an aftermarket exhaust system. Taking this as a baseline, we fitted a pair of our de-cat pipes.

Back on the rolling road and with some aditional re-mapping, a further 10.1 BHP was achieved. Jim was pleased with the resulting 408.5 BHP and will be returning for a full twin box, duel exhaust system from RS Fab in the not to distant future.

RS4 B7RS4 B7RS4 B7

Watch this space for undates regarding the new RS4 B7 exhaust sytem.