Originally Posted by
ThirdCoastTBSS
This vehicle an 03 Silverado automatic had a v6 now has an 06 5.3 with 12mm shaved heads, 232/234 .595/.598 112 cam, headers. Was told it has a v6 pcm. So, we did a write entire with a factory 5.3 tune from the repository. adjusted idle changes and never quit go it to idle correctly, could not get stfts to come in. moved on to the maf tuning. our LTFTs are erratic.
may have bit off more than we can chew, but know it is a good learning experience. could someone please take a look at the attached file and maybe point us in right direction. thanks.