Quote:
Originally Posted by FSociety
Stage2 93 or better
Unless you have an X4 M40i stock cats might work with E30 for sure (Dyno proven) but regular 35i has definitely some restriction there you want to take advantage of every bit plus the sound is a plus.
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Stage 2 93 huh?
I like that. Your sure it's safe? Again I have a 2015 with PWG.