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Adding a DSX E85 flex fuel kit. Anyone know what ECM 220 is and where it's located in the editor?

Problem solved. Bad or something not right with the fuel injectors. None were dead but doing an injector cancel test, sometimes, it was a barely noticeable change on a couple cylinders. But not...

Sorry for the delay. Busy week.
Idle is not really bad but you can feel when it changes AF ratio. Especially when it goes from rich to lean.
What doesn't make sense is this only happens when...

Yes, it still has the cats. Currently and temporarily has a WB in place of the downstream sensor but was doing this before I installed the WB. Disabled the cat over temp long enough to find out that...

Does it all the time after normal temp. I'll disable the cat overtemp and see if it stops. Haven't tried that yet. Thanks

2015 Camaro L99 Auto Trans E38 ECM
Did a DOD delete and installed stock LS3 cam. GM 12623063

MAF and VE table fairly dialed in and runs great with one exception. When coming to a stop in gear for...