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      01-03-2009, 06:47 AM   #9
BimmerRob08
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Drives: 2008 M3, Space Gray
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this is an interesting topic, I'm still trying to collect data before I make a muffler purchase and this don't sound to promising. I'd expect that at low rpm's as well as high rpm's that reduced exhaust pressure would aid in rpm spin up and not hinder it at low rpm's. anyone have a valid explaination on this? What about any dyno tests? I've seen some (can't remember which posts) that showed slightly higher torque and hp through out the range from low to high rpms. But some of you guys are already experiancing low rpm loss of power.
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