ive looked all over and wanting to get a little bit more advise before i do anything....im lookin to put a 3.4 pulley on my 97 gtp but dont have anything done yet whats the bottom i can have done b4 puttin this on....im gona order a pcm from 3800 performance... one place was saying all i have to do was take out ubend and get colder plugs but find a lil hard to believe...and if i get a 3" down pipe what else has to go with it dont really have much money to spend at the moment tryin to get bye will the least i can for now thanx...
