Yes it's possible to pass with 272's.

High HC at idle means too much of some sort of Hydrocarbon (I.E: High fuel pressure, burning oil [valve stem seals] etc).

Look into your PCV system, and if you are burning oil at idle. Also, a 255HP on a stock FPR may be overrunning it and you could have a rich condition at idle.

A poor cat will also cause you to fail.


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Last Login: September 28, 2021