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      04-21-2012, 11:31 PM   #10
LS7 N55
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Drives: 2011 335i and 08Z06
Join Date: Apr 2012
Location: Westlake village ,ca

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I just did the hp foam drop in and it seems a little snappier. From most that I have ready your not going to see huge gains. It cant hurt though as the extra boost from a tune can only help with the added filter.
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2008 Z06 bolt-ons
493 rwhp 464 rwtq
2011 e90 335i---HP filter..JB4