hmmm goood ?... welcome to the forums its a great place but im pretty sure the gt requires a tune dont see why the sixxer wouldnt some one will chime in with the info you need...
idk how to tell if it has a tune specially wiht out a handheld tuner
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2005 Black GT Manual
Steeda CAI-SCT XCAL-Pypes O/R X pipe-Pypes Mid Mounted M80s-Red Top OPTIMA-HurstSTS-Tein Tech S-AVIC f900bt-Back up Camera-20" Black Chrome FR500s-GT500 FRONT/REAR-Factory GT500 6k HIDS-3k HID Gt500 fogs-
303rwhp/319tq
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