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DKF Exhaust System Testing/Impressions
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01-11-2012, 10:39 PM
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beta
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Drives: 2006 M Roadster
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Why didn't DKF compare before/after with the same headers? The headers alone are usually responsible for a 20+ hp gain. I'm a little disappointed as I really wanted to see what I could expect on an N/A car that already has Euro Headers.
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