2014 Mustang GT, odd fuel trim during coasting idle

[VitViper]

During "target neutral" torque source, I get -20% to -30% fuel trims, for some reason, and I haven't been able to track it down myself. MAF curve is spot on -- within like 5-6%. The car has 60# Deatschwerks injectors, on E85, with bolt ons. Car runs superb otherwise, just not sure what table this enrichment is coming from -- it doesn't do it when I rev the motor in neutral at a dead stop.

See attachment.

[SultanHassanMasTuning]

maybe something to do with stoich settings? never tuned E85 in a country that doesnt and will never have it

[VitViper]

maybe something to do with stoich settings? never tuned E85 in a country that doesnt and will never have it

I have stoich AFR set to 9.8 in the calibration (only way it would even work IIRC). There must be some enrichment tables we're missing or something? AFR does not go lean when the fuel trim gets applied (because it is in fact rich, the idle will drop and catch real quick because of all the extra fuel).

To add to that, it's gotta be something in this ECU... as I've done E85 on tons of cars, and this is the first I've seen this kind of behavior coming to idle.

[SultanHassanMasTuning]

did you adjust your other tables

over ride fuel usually is 1 (i would change that)

lowest lambda when fuel shut off i think stock its .699

lambda value when fuel is over ridden stock is 1 I would change that

[Eric@HPTuners]

During "target neutral" torque source, I get -20% to -30% fuel trims, for some reason, and I haven't been able to track it down myself. MAF curve is spot on -- within like 5-6%. The car has 60# Deatschwerks injectors, on E85, with bolt ons. Car runs superb otherwise, just not sure what table this enrichment is coming from -- it doesn't do it when I rev the motor in neutral at a dead stop.

See attachment.

DId the cam angles record properly? I changed the scaling but haven't had a chance to retest it.

[VitViper]

did you adjust your other tables

over ride fuel usually is 1 (i would change that)

I don't see this switch in HPT

lowest lambda when fuel shut off i think stock its .699

I have it set to .8, but it's under the cat protection tab in HPT, doesn't seem to be it since I have cat temp control off anyway.

lambda value when fuel is over ridden stock is 1 I would change that

That one I see in HPT as 1. Try 1.2 or something like that?

[VitViper]

DId the cam angles record properly? I changed the scaling but haven't had a chance to retest it.

Sort of. Exhaust Cam Angle logs, Intake Cam 2 Angle logs. INtake Cam angle doesn't log properly (hence why I used intake cam 2).