Originally Posted by
Rwhite85
i have been around performance upgrades all my life , wait....it is my life. but i never got in the brain before.. are locale guy is the one that said he would tune it then said no because i did the wrenching. that is how he started out was riding shot gun. i cant even guess how long this will take me to under stand but i know i can and would have tried to know a little before i built the truck.. my biggest worry is i took out a low compression (8.9) vvt 4.8L installed a 5.3L with a cam. there may not be a lot of difference in the two but i feel like there is. the 4.8 could get 60(+-) degree of timing with the VVT. 5.3L can get undder half of that so i would think it would change the tune like crazy.
18 in all them base cost low and high prolly a dumb idea but it got it to run. i really think my stock exhaust is why i cant really here it lope. altho sometimes it humps really hard and sounds like to 15 subs pounding and i have no codes when i drive. (most times)
might be cutting the cats out this weekend i am going to mess them up if i havent already.