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Old 01-31-2009, 03:17 PM   #11
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Join Date: May 2005
Location: Dallas
Posts: 987
My Ride: E46/E90 M3, Mini CMS
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Originally Posted by vI6ous View Post
The postcat O2's have nothing to do with running to rich or lean. It's the precat O2's readings that the on board computer uses to modify air fuel ratio. The postcat O2's are simply for emissions readings, or that's my understanding...
I hope your right. In that case I wouldnt mind going the O2 SIm route.
I need to get my car codes read. I just have the light at the moment. Also, if I try the defouler method how will I know its working? Do I need to install it, clear the codes, and then wait to see if the light comes on? Or should I clear the codes, install, and then start it up?
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