I'm tuning my 2020 Mustang GT A10, little by little as a go "Full bolt-on" and eventually E85.
In my stock WOT log, I got expected .82-.83 at the richest.
Attached, you can see I hit as rich as 0.72. COT is disabled. Spark and fuel are bone stock otherwise. Mechanical changes since stock pull: Borla S-type cat-back, Velossa ram-air duct. (also 3.55 rear, rear suspension upgrades)
What tables could be combining to command this rich now ?
Separately, the car now stalls once in a while when coming to a stop in Drive. Ideas on hunting that down? I'm very happy with the way the car runs otherwise.
I have a ported throttle body on the shelf and have half a mind to install that and tweak the tune and this issue combined with that upgrade. The porter claims "no tune" but ....