E46Fanatics - View Single Post - best tune for catless headers for m54b30
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Old 07-31-2013, 09:48 PM   #6
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Join Date: Feb 2013
Location: North Carolina
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Re: best tune for catless headers for m54b30

Originally Posted by jdjg View Post
BMW Euro map... no more Check Engine light, no mor O2 sensor after cat, no more cat....., also you will gain around 5hp vs BMW US map....

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is there a easy way to do this diy? or is there a better tune out there for less?

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