My transmission is slipping bad on my excursion. I have 66mm turbo runner intake and 5 in exshust. Beside upgraded torq converter what else good to upgrade
Ford re-manufactured HD 4R100 and some valve body mods.
Triple disk TC and a 3-year / 30,000 mile warranty for less than $3k. I beat the piss out of mine at 450hp until it became apparent that billet parts were necessary.