Originally Posted by stork68

I have a 04 GT with 78mm throttle body, CAI, short tube headers, Magnaflow X-pipe & catback exhaust, Comp Cams stage II cams, and typhoon intake. Had it dyno tuned and got 267 rwhp and 280 rwtq. My base line before the dyno tune was 228 rwhp. If your going to invest alot in mods have it dyno tuned. I gained nearly 40 rwhp. I'm putting in a Procharger kit this spring, hoping to get 350-400 rwhp.