Quote Originally Posted by YungTyph View Post
Glad to hear that's working for you, did you seg swap? That bin is a 6L and has different injector flow rates
I used Universal Patcher to compare my existing tune to Startup bin and only changed a few items pertaining to start and idle. It is very drivable but by no means tuned for max performance....yet. This 5.3 was in a early 07 Silverado with automatic trans. After a mail order tune it 'identified ' as a 4.8 with manual trans. I haven't got deep enough to check on Injectors yet. But I have to admit it's interesting to program these engines as I learn more.