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      01-31-2012, 05:26 PM   #81
New Member

Drives: BMW E90
Join Date: Nov 2011
Location: Guatemala

iTrader: (0)

Originally Posted by DJ Apex View Post
Delete cats, be careful remvoing o2's make sure u dont lay them on the ground or anything keep them clean put them in a zip lock bag. buy a bms o2 sim in advance befor this mod and buy 6 new gaskits for header u will mess one or two when removing and mocking up header to motor. as far as that enjoy and take your time!
Thanks! I think I might do that, I saw these OBX headers on ebay that caught my attention, instead of just using the factory headers:

So headers + 02 Sims should be enough to have my car running normally (without Cats), right? How about gas mileage, did you solve your problem?