You could do it, but its HIGHLY unadvisable!
You should at the very least, have a better CIA system, whether it is a do it yourself job or an aftermarket one. Also I think the 07's still have a U Bend in the exhaust piping after the Catback, I cant remember 100%, but I am sure someone with an 04+ can tell you better.
And if you do it, make sure you get the car scanned after doing so. You dont want your newer GP blowing up on you.
Does the same go for an 02 model? I was looking to change the pulley to a size smaller because I read somewhere where you can and not have to change PCM or heads. I have a CIA but stock exhaust.
I'd like to see someone run 30*![]()
Heads? You won't need heads unless you are planning a crazy cam or turbo setup. They are always nice but if you spent 2 grand on heads and another guy spent 2K on other mods...you'd get bent over
Dropping pulley sizes is the last thing you really want to do modding wise. I would say since you already have a CAI then get a 180* or a 160* Thermostat, Colder Spark Plugs (Autolite 104's or NGK TR55's), a 3" Downpipe and U-Bend Delete, DHP/Overkill PCM, THEN....you should be good to drop to a 3.4":th_winking:
Heads? You won't need heads unless you are planning a crazy cam or turbo setup. They are always nice but if you spent 2 grand on heads and another guy spent 2K on other mods...you'd get bent over![]()
actually they say for a 04+ you should put headers for the 3.4 (thats not crazy cam or turbo! Lol) i know we all have the "same" car but there is some difference between a 04+ and the older body style. Like our cars didn't have the ubend...lol thats one thing pontiac got smart about!