I'm having a devil of a time taming the idle with my 2018 Mustang GT with a Vortech kit. Car runs very well, except I have a surging idle that I can't seem to make a dent in solving.
Car wil idle fine for about 1 minute, but as it appoaches the target idle speed, it starts surging and gets close to stalling (it's stalled once). I've tried refining the MAF curve (helped somewhat), but adjusting the idle speed and general idle settings haven't made a difference. I also tried reclocking the MAF to see if that solved it, but no luck.
Attached is a log and the tune file from which the log was created.
Any insight help is greatly appreciated!
2018 Mustang GT Wes 029 Idle RPM.hpt
Idle Surge 2.hpl