i just had a couple mods done to the new 2011 gt. i put a steeda cai with 93 race tune and stainless works catback exhaust. ran it on the dyno several times. the best i got out of it was 16 hp. 
then i see on yu tube, cars gaining 30 to 40 hp on tune and cai. dont understand this. anyone got any input on this.
then i see on yu tube, cars gaining 30 to 40 hp on tune and cai. dont understand this. anyone got any input on this.
