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Nightrider07 · 10-17-2007, 03:47 AM

well supersprint sells and exhaust and y-pipe for 1300 dollars. they say 15 hp gain. also supersprint i have heard is quite the sound does not change to much.

10-17-2007, 03:47 AM	#3
Nightrider07 New Member 4 Rep 27 Posts Drives: 2007 bmw z4 3.0si Join Date: Oct 2007 Location: glendale iTrader: (0)	well supersprint sells and exhaust and y-pipe for 1300 dollars. they say 15 hp gain. also supersprint i have heard is quite the sound does not change to much.
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