yaycandy
Aerospace Engineer
The newer designed direct injection engines are now incorporating additional injectors above the valves so the fuel detergents can get at all the deposits.
Thats the ecoboost in the f150 from 2017 to now. Even a new sho engine wont have it. You can just do single port or multiport water meth, more power, cooler combustion temps and an up top cleaning additive. Best of everything
