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 fmf powercore4

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haygood





fmf powercore4 Empty
PostSubject: fmf powercore4   fmf powercore4 EmptyFri Mar 22, 2013 7:29 pm

Has anyone on here ran an aftermarket exhaust without a programmer? Wondering if it could do any damage to the motor or what the results were? Thanks
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skierd





fmf powercore4 Empty
PostSubject: Re: fmf powercore4   fmf powercore4 EmptyFri Mar 22, 2013 10:22 pm

Ran that way for about 15000 miles. Ran fine, runs better/stronger with a programmer.
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