I know this is an old post but did you ever get your tune resolved? I also just installed a procharger ho kit with the supplied tune from procharger in my 15 Mustang GT and its doing the exact same thing. When gets up to normal operating temp the idle starts surging at 2500 rpm and I gotta tap the gas for the idle to go back down. It does it when i come to a stop or just idling. Procharger has sent me a revised tune and it is still doing it. Just got done data logging and emailed it off to them.
Im new to the coyote mustang world, had 2 new edge stang procharger with the procharger tune and never had issues.
https://www.svtperformance.com/foru...g-gt-auto-with-procharger-tune-issue.1128848/
Im new to the coyote mustang world, had 2 new edge stang procharger with the procharger tune and never had issues.
https://www.svtperformance.com/foru...g-gt-auto-with-procharger-tune-issue.1128848/