Yeah, I read the modding your car thread and it was so much help. But I think I worded my question wrong. I just need to know if the k&n intake makes that much difference in the tuning of the pcm. If I get the pcm tuned for a stock gt and then buy the air filter later, will I need to send back the pcm for a re-tune?
And thanks for the advice about the exhaust tips. You probably saved me a bunch of trouble because I was about to try myself.