Suggestions for a power programmer - Hummer Forums by Elcova

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Suggestions for a power programmer

01-24-2011, 09:58 AM

eddiemcnally eddiemcnally is offline

Hummer Veteran

Join Date: Jan 2010

Posts: 48

Re: Suggestions for a power programmer

Ok, so I installed the hypertech with the 87 octane tune! It seems like I have more of a ping noise at idle and driving between 5-15mph but it seems to go away at the higher mph after that! Unless I can't hear it? Is this normal? What kind of mileage gain did you get? Other than the minor ping things did improve!

Thanx

Eddie

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