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Old 09-12-2010, 09:13 PM   #160
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Join Date: Jul 2008
Location: FLA
Posts: 2,894
My Ride: E90 6MT
Originally Posted by aggieE46 View Post
Honestly, the butt dyno says I lost power. But, it might be my ears playing tricks on me. It used to sound really raw up top. It sounds more tame, now.
To be honest, the major benefit you should be looking for is more mid range power than peak. Though even so, I don't expect a large change in peak power.
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