Thread: Finally! Riss Racing Downpipes for 335.. Amazing Power Gains and Info Inside!
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      06-30-2007, 12:09 AM   #43
pglogan
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Drives: 335i Coupe
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Quote:
Originally Posted by catm3 View Post
Full TB, but the baseline dyno of 269 was with Catback, so the delta is just adding the DP.
I don't think a full ~30whp can be realized by just adding 3" dps on stock exhaust, thought.
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