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      01-15-2011, 12:35 PM   #36
txz4
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Drives: 2006 M coupe
Join Date: Oct 2010
Location: san antonio, texas

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im almost positive that they dont make a gruppe m for our car. the k&N filter is a great mod but was only $50 for me. maybe just look on any big atuo supplier website to find one. its just a panel filter that fits in the stock location.

for what it sounds like your looking for i would get someone to just swap the cats with a highflow instead of wasting the money on a complete setup. your headers are already catless and not of bad design either so i wouldnt be in any rush to replace those. like the others have said, the diff swap is going to be your best bet, with the tune as a close second. I really dont think there would be ANY problem running the tune wihtout more cooling. I live in Texas and i cant say that im all that worried for when summer comes.
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