Hey guys! I have a 04 naturally aspirated grand prix with 50000 miles on it that I have been daily driving for the past year. I have been thinking about adding slight upgrades to it such as a new downpipe and cold air intake but I am not sure it is worth adding little upgrades for a naturally aspirated 3800. Will the performance be that noticeable? I have also been reading about PCM tuning as that seems to be a common upgrade for these cars but I dont think I have a tuner near me and I have heard mixed things about pre-tuned PCMs. Should I just leave this car stock to keep it as a nice daily? Or is a little light modding worth it?
