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
Hey Kevin, this is actually very close to what I want to run. I?m running 60s atm but might pull them to test some decapps at low boost. Thank you for this. Also, what was the turbo on this application?Originally Posted by kevin87turbot
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.
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