Qship

Hello people,

I have a question of those who are reseraching exhaust upgrades for the 05. Has anyone seen horsepower gains claims for muffler or headers. I just read the MM&FF article on the modification to the 05 and they were saying that without a computer reflash that there aren't any gains. I just wanted to see if anyone here noticed the manufactures giving documented gains. Thanks

DAVE05GT

ALL OF THE GAINS REPORTED THAT I'VE SEEN HAVE BEEN WITH A TUNE. CAN'T REMEMBER WHICH MANUFACTURER WAS REPORTING WHAT GAINS RIGHT NOW BUT FOLKS SEEM TO LIKE MAGNAFLOW AND SLP.