Recently swapped to a 3 bar map on a turbo 4.8 fresh build. My stock tune is for a 1 bar map, does anyone have a 4.8 stockish tune running on a 3 bar or a turbo tune I could alter to atleast get this thing idling?
Recently swapped to a 3 bar map on a turbo 4.8 fresh build. My stock tune is for a 1 bar map, does anyone have a 4.8 stockish tune running on a 3 bar or a turbo tune I could alter to atleast get this thing idling?
I can probably help.
What year is your PCM? Which injectors are you using? What fuel are you using?
P01, I have a set of 60# injectors in it atm but have other options, and just a single 250.
Here's one that I did last year on a 2002 GMC Sierra 4.8L. It's 3 bar with decapped injectors. It is a pump gas tune at 7.5 psi boost.
I can't recall the cam in this one. Maybe an LSXceleration Stage 2.1?
It has a 4L80E segment swap.
2002gmc48with4L80Esegment3barkwmod9.hpt
It was a 70mm On3 turbo.
No decaps, throw them in the trash.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.