ryananstey2011

i might be getting a gmpp cat back exhaust but i dunno if i wants to get performance or touring. would there be any gains in HP with the cat back. if i get the gmpp exhaust would i get a new catalytic converter too.? also im thinking about getting gmpp intake too. If i had gmpp exhaust and gmpp intake, would i have any gains in HP? would i see a difference in throttle response?...................................

Thanks,
also how come the touring and performance exhaust is different prices? the performance exhaust is roughly $650 installed and the touring is around almost 800 installed?