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      04-02-2010, 07:08 AM   #14
J08M3
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Drives: 2011 M3 COUPE
Join Date: May 2008
Location: NEW YORK

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Quote:
Originally Posted by Mike@Powerchip View Post
Check engine light might come on in the next 1,000 miles due to the HFC's though. They don't appear right away due to the way the system is monitored.
Eventually it probably will.... Mine has twice so far. The first time I cleared it because I wanted to just make sure the light was from the HFC's. The second time it cleared itself after a couple hundred miles or so and hasn't come back since. I guess these cats are right on the threshold, so it may turn on once in awhile. But after a number of drive cycles (I guess that's what it needs) it will probably go back off again.
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