I also just tried replacing the sensors and mine kicks after doing a hard pull too. My mustang is N/A so I don’t think it has anything to do with your ESS kit.
I tossed four new sensors in… and the issue is still there. I can flash a tune and the issue goes away. But anytime I go over 6k rpms the check engine light pops on and I get code P0340.
Any other suggestions on things to try?
Thanks for writing this detailed post. I am struggling with the same issue P0340&P0344. I saw that you resolved it with new sensors. I just ordered them and hope it solves my problem as well.
My question for you is when did you get these codes? i.e. Immediately upon startup? After driving it...