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Exhaust and re-tune

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Old 12-12-2012, 02:07 PM
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Exhaust and re-tune
Hi,

I have a 04 mazda rx8 with a Greddy kit boosted to about 8 psi. Car is tuned from mazdamaniac via the accessport. I am wondering if I will I need a re-tune if I put a catback exhaust on the car? Not performance wise but from an engine safety standpoint.

thanks,
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Old 12-12-2012, 04:28 PM
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if it is just a cat back then probably not. You will probably be ok.
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Old 12-12-2012, 08:07 PM
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MM would probably be the best person to ask during his next tune night
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Old 12-12-2012, 09:52 PM
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Do you have an AFR gauge? If so, what are your AFRs like in boost?
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Old 12-13-2012, 10:20 PM
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so, you don't trust your tuner enough to ask *him* rather than the numnuts here?
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