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      04-02-2013, 02:05 PM   #33
SCHMOUPE
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Drives: 2007 Z4M Coupe
Join Date: Apr 2010
Location: NJ

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2007 Z4M Coupe  [0.00]
Quote:
Originally Posted by beta View Post
Not to be the bearer of bad news, but make sure you put it on a dyno that can read AFR. You need to make sure things area actually ok, and not that the car adapted to the bad conditions, giving you lower than expected performance.
Just wondering, how would a bad rear O2 sensor decrease performance?
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