Official Performance Mod List for 335i N55
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03-14-2011, 02:15 PM
Join Date: Jan 2010
That can't be right. A ~50whp loss at 6500 rpm from installing an exhaust?
That makes no sense.
Also, did you just bolt up an n54 exhaust, or..? Just wanted to confirm there was direct fitment.
2013 EBII 335i M-Sport 8AT MPPK
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