Originally Posted by moburto07GT

With that setup i was making right at 310 rwhp and about the same for torque. Stock my car only dynoed 260ish horsepower with the 20x10 Black/Machined Carroll Shelby CS40s on it (same rims were on the car after the mods were done). So i gained 50ish rwhp with the headers, Comp Stage 2 NSR cams, Steeda/FRPP intake with high flow elbow and a Brenspeed dyno tune. After having parts installed the car loved to rev and would keep pulling all the way to red line, and probably would have continued to pull past 6500 rpms but i wouldn't want to do it with the stock valve train. There was only a slight change in the daily drive ability of the car, but nothing major to worry about. The only thing i would suggest is to go with 3.73 or 4.10 gears to help get the most out of the gains in the upper rpm range. My car gained a pretty decent amount throughout the power band but really showed good gains over 4500 rpms. If i had to do it over again i would, just probably would have went a little more aggressive on the cam profile (such as Comp SPR Stage 3 Cams) and installed better springs and retainers. As far as inspection goes i passed without a problem, but all they do is look under the car with a mirror and check for cats, then do the OBD2 testing, here in Nashville, TN.