Quote:
Originally Posted by wrldtravler84
I have the Injen intake and the BMW performance exhaust so far. I figured this would be the next step. I really wish they made performance headers for the 128i.... So I hope this power box will be a good stop gap till I reflag the ECU... Then I don't know how to get more power
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they do. Check out the 328i forum. Made by Gavin@MMwerks. He also specializes in making performance exhaust for cheaper money. He takes your old exhaust and cleans out the inside similar to the BMW performance exhaust.
MMW Catless Ceramic Headers (N52) - 2-21-12
https://www.facebook.com/pages/Muirh...34190023286093