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      01-10-2013, 01:05 AM   #12
GhanemMBN
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Drives: MB SLS AMG & BMW X5M
Join Date: Jan 2013
Location: Abu Dhabi

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Mmm

The best M5 exhaust is the Manhart Racing, we'v tried them all and got the most hp gain with manhart and G-power as they come from the same manufacturer and are exactly the same! The only difference is the print on the tips. To get the max gain install BMC filters, manhart catbacks, sport downpipe, and ecu tuning. By that ull get about 645+
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