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Re: 2003 OLDS ALERO 2.2L HIGH NOX
Posted to Emissions Forum on 9/10/2009

Ditto on the fuel trims. Check them on the dyno under test conditions.

Don't forget to check for exaust leaks. I like to stick the smoke machine in the tailpipe when the car has sat overnight. If there is any kind of flex joint up by the exaust manifold I wo... Login to read more.