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      12-25-2008, 08:31 PM   #10
eagletangogreen
Got Track!!!!!!
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Drives: 08 M3 coupe
Join Date: Aug 2008
Location: Fayetteville..NC

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Quote:
Originally Posted by CodeRed View Post
Do you really feel a difference?I did it on a couple of porches and I wasn't quite convinced
No there is no difference it just noise and "maybe" a bit better gas mileage on the HWY if that applies to you..