F30 / F31 / F32 / F33 / F34 / F36 (2012 - current)
Hello, F30 335i owners,
What's the most reliable high-flow downpipe for the F30 335i with the stage 2 Bootmod3 tune? I've been looking into the Fabspeed catted downpipe, the ER catted downpipe, and the AR design downpipe.
Before anyone says anything about going catless, I don't want to do...