i know allen is a busy man so i'll ask in here........when i put on these long tubes i get an upgraded tune right?? so i should try and time it so i can put the upgrade in at the same time as the headers? will my truck run poorly without the upgrade to the pcm? thanks

 

no it should run fine how it is, the tune will help though. don't wait on the tune just to put the headers on.

 

i tink headers will change your fuel trims a little but not very much. that is about it.