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      03-15-2010, 01:38 PM   #5
N8dawg
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Drives: 2008 E90 M3
Join Date: Oct 2009
Location: St Petersburg, Florida

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Quote:
Originally Posted by Ca$hOnly View Post
If you're talking strictly axle back, none of the will give you much of a gain. If you want a noticeable increase in torque you'll need to get a header back (cat-delete) system.
I would, the only problem is I don't want to get a tune to avoid CEL because it will void warranty.
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