I had thought about the transition back to stoich but i do like a experiment. I figure it may result in a small count of misfires.

Has anyone came across a parameter for enrichment after dfco or anything similar on the gen 3 gm pcms? Drives me nuts to hit dfco thinking im saving fuel and get the .88-.93 lambda for a few seconds...

I ended up getting a hpt file for a 03 or 04 truck. I can share that if it will help.

Does anyone have a stock 2003 4.8 or 6.0 5 speed manual bin file? I would also appreciate a xdf if possible. This is for a auto to manual swap on a 03 silverado 5.3.