Having gained so much experience with the B5 RS4 it was only logical that we cast our tuning eyes over the new B7 RS4. The biggest complaint from customers was the lack of claimed power so we set about looking at way to increase it. We invested in a development engine to dismantle and analyse.

After all the work we have done on this engine the power went from 390bhp up to 430bhp and 340ft-lbs and gains of up to 50bhp and 50ftlbs in the rev range.

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