Old Aug 31, 2004 | 02:59 PM
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pbizzlegsr
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Default installing carsound cat messes up my tuning?

i have a 99 gsr with the basic i/h/e and skunkIM..and its tuned on a dyno from vafc...if i were to install a carsound cat would that mess up the fuel tuning or itll be okay since its after the header..?
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