Fixed wot adjusts perfectly to 11.75 but no matter what changes I make to the tune it idles at 9.8 to 11.0 . 20 deg idle timing to 27, pulled fuel etc. P59 ecm. Commanding 14.681 smokes almost like a diesel at idle . Started after running tank out of e85 and switching back to 93. Yes swapped tune back
Gotta post the tune and logs man, we can't see what you see without them.
And you need to detail the parts used because if something is setup wrong, it could be why.
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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