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      11-25-2012, 10:24 PM   #3
psmitty95
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Drives: 2009 E90 335i xDrive
Join Date: Jan 2012
Location: Greenwich, CT/ Dallas, TX

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Quote:
Originally Posted by benzy89 View Post
I'm not sure how CarMax is with their warranties & you might want to read up on it because even just swapping out the intake might void their warranty.

If you're forced to stay 100% stock under the warranty agreement, you'll prob benefit more from the JB4 & running E85 blends. If you can mod (Intake, DPs, etc) & the tune would be the only concern, the COBB would make much more sense & offer greater performance gains.
Does COBB actually have greater gains than the piggyback's now? Where have I been... Hahaha is it due to the pro-tunes?
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