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Part throttle stutter Mustang
2017 mustang 3.7 mu52 injectors e85.
At partial throttle in any gear above 1 around 2-3k i get a shutter / stumble. this happens even with the stock tune with only injector information weather im e85 or running 93. i have attempted to adjust DD tables. i have turned of the shuffle switch. i have changed best drive ability minimal load to 5. my LTFT look decent and my STFT arn't outrageous when its happening. i dont see any detected misfires but i see a lot of throttle position fluctuation. pedal ~30% throttle position at 90 then drops then picks back up. i have cleaned the throttle body to be safe it doesn't stick and if your above 3k it doesn't do it no matter where the pedal is. I do notice that when issue is happening i seem to be using tables mp9 and 14 and fuel economy drive is the vct source. any tips on maybe disabling it?
any help is greatly appreciated. i am trying to fix drive ability issues before trying to go all out.