Thread: New mods

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Originally Posted by Js97GTP

Hey guys, I'm am hopefully going to be modding my GTP over the winter. Gonna be adding a cat back exhuast, 3.4 pulley, cold air, and upgraded PCM...any ideas of what my hp rating will be after those mods??

First of all if it's power your looking for I'd scratch the catback off your list of things to buy and invest that money into some headers. Our stock catbacks don't really become that restrictive until you get close to 300hp. The most restrictive parts of the exhaust are easily the stock manifolds and downpipe with the u-bend, which headers will eliminate altogether. Also you wouldn't be able to safely run that pulley with those mods listed, but if you got headers you should be able to no problem.

As for how much horsepower you'd have IDK, all I care about is times. With a setup like that (with headers instead of a catback) your looking at high 13's with a decent launch.