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Registered User
Join Date: May 2006
Member # 72392
Posts: 8
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Programmer questions
Has anyone tried a Hypertech of Jet programmer on a 8.1 liter engine? I have an 02 2500HD GMC with this engine and wanted to try to increase gas mileage. I already have an induction system on it and also want to get a cat back exhaust. I also do a lot of towing with it.
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