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      10-29-2012, 04:01 AM   #4
roastbeef
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Drives: E92 M3
Join Date: Nov 2010
Location: Orange County, CA

Posts: 753
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resonators that use factory cats, pulleys, exhaust, intake... each claim around 10hp, but we know those numbers are merely claims. but you can do ricer math and say you have 450+ hp.
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