So just got exhaust work done. I installed Stan's headers and 2.5" dual exhaust with flow master 40s. Just driving home from shop I did not see much improvement outside of a quiet cab and nice sound. I hope that all of that will change after the pump is adjusted. I have looked up on youtube and found out how to turn it up but how much? some say 1/8 to a 1/4 of a turn? will the turn it up till it smokes then back it off work? If someone has swapped injectors to better match the headers what did ya go with? I also seem to have more white smoke than before is that a common problem with swapping headers I'm not sure how its related.