krohelm Posted July 17, 2017 Report Share Posted July 17, 2017 VE is definitely way different with alpha-n at idle rpm and AC on vs off, and short of a full 4D fuel table I don't see a supported method of working around it.G4+ ECU Tuning Functions > Fuel > Fuel Corrections > Idle Load Trims > Air Con Trimamount of time in milliseconds added to the injector pulse width when the Air Conditioning clutch is engaged.This is the right trim to use, but it's locked to injector millis and thereby traditional fueling. In modeled alpha-n:AC turns on increasing demand.Engine goes lean with stall compensation via IAC solenoid.Engine dies.By adding 32.5% to my idle cells in a 4D fuel map I've worked around this, accomplishing stable lambda across AC state transitions; but this should be a supported use case.Additional context: http://forums.linkecu.com/index.php?/topic/7096-idle-with-accessories/ Quote Link to comment Share on other sites More sharing options...
mapper Posted July 19, 2017 Report Share Posted July 19, 2017 Can agree to this. I would also like to have a fuel compensation vs idle solenoid position. Makes big difference on some cars. Supra 2jz for example Quote Link to comment Share on other sites More sharing options...
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