E46Fanatics - View Single Post - No "check engine light" with headers!!!
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Old 01-27-2010, 07:23 PM   #21
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Join Date: Nov 2006
Location: Somerville, MA
Posts: 1,292
My Ride: 2005 330xi
Originally Posted by pat View Post
This is bad news. I was hoping to get my o2sim installed when it warmed up
I'm surprised that more people are not having this issue. Some people have gone thousands of miles on the O2sim too with no engine lights coming on...
'05 330xi - Koni, H&R, Rogue, Supersprint, UUC, Dinan, Apex
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