I am finishing a project that I am a little over my head for the tuning. I swapped an LLY into my 01 silverado which had a LB7. I am using the LB7 ECM, FICM and GPCM so they all communicate together. The problem is I need help with the tune. I have HPtuner which has all the same tables as EFI live so I should be able to follow if you are referencing EFI live tunes. I am mostly concerned about the timing. I know the LLY has smaller injectors so it needs more PW which I corrected for but I don't know how much to change the timing and I don't know if i should be changing the timing for the entire table or where it needs the most timing and what is too much timing. I am not looking for a huge amount of power so I am trying to keep it in a range that is safe but still produces near or slightly above factory levels.
Engine tune-need help
- Thread starter timmey
- Start date
Should be able to reference a stock tune file, I don't get on many other forums but I do get on dieselplace here and there, under tuning files there you will find many stock files. You can download efi off their website for free, download the stock file from forum, read and make your adjustments from there. For timing you will wanna look at timing base "c" if you're below sea level. That should get you somewhere in the ball park.