Anyone ? If you done this mod to a B5 RS4 it would be 380 standard to 460bhp and standard torque 325lbs/ft to 450. was a well worth mod ! Is it on the R26 or should I do more ?
It'll make a difference but nothing like that. The standard exhaust can flow to 300bhp with a decat, so it isn't much of a restriction. I'm sure i've read that the cat is a 10-15bhp restriction when you're remapping these cars, so not a lot to be gained, and even less if you going sport cat rather than decat.
