I just did engine swap from a 5.3 to 5.7. I'm having issue with costom 5.7 tune i made up. The truck fire and pops to grand and then stombles intill it dies. If you feather the trottle it will run longer but just stombles. So for kick I load my turbo 5.3 tune and fire right up with no issues but did lean because not the right tune. So here is the tune i made up. Here is the specs for the motor. 2000 LS1 with LS6 cam, 9.2cr with 60lb injectors, 317 heads, and t70 front mounted turbo. Thanks for the help guys.

 

I can't read the tune, did you rescale the 5.7 tune for the 60 pounders? Was the 5.3 tune set up for the 60s?

 

I had all the same stuff install in my 5.3. The only thing the changed was the new 5.7. I for got to change the 1bar settings to 2bar settings on the the ls1 tune thats why it wouldn't start.
Thanks for the help guys.