Quote:
Originally Posted by Ray2SS
GM will usually pass even with LT headers.. Dodge generally will not though. Hopefully it will be resolved this week.
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On ours with LTs you have to turn off the rear O2 sensors or you get CEL for cat inefficiency even if you have cats. So then you show up to your emission test with two sensors showing "not ready". When I did my car I almost went with LTs and the tuner talked me out of them. He said it'd be about 15 or 20 extra horse power and wasn't worth the emission head aches on this car. After watching some folks have to swap back to stock parts to pass, then re-install their headers after....I'm glad I went with shorties. Headers on the Challenger are a MAJOR job.