Thread: Alex Alpine ECU Tune
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      11-12-2019, 11:19 AM   #862
Alex@Alpine
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Drives: E90 M3
Join Date: Feb 2010
Location: United States

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Quote:
Originally Posted by timo1980 View Post
Does anyone know if passing emissions with stage 2 tune, but stock exhaust will be a problem? What about passing with stage 2 tune and no primary cats?
You need to be 100% stock.
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