Hello, my name is nathan. I have a base grand prix 2007 and just want to know if theres any way I can convert it into a gt some how? I really want to tune my pcm but can't unless its a gt. They said maybe if I concert it into a 2004 gt pcm but I don't know where to start. I have some minor mods. Custom high flow air intake, polished ported exhaust manifolds, dual exhaust, msd coil packs, prj spark plug wires and ngk spark plugs. I want big stuff just need to tune. Can some one help me I love my grand prix I'm a pontiac fanatic. Just want to mod!
Originally Posted by Fivefingerdeathpunch
