torque converter lock switch
 

any one ever heard of this b4? the guy who built my truck said it could use a torque converter lock switch, i think i kninda know what hes talkin about when im just in town it dont blow much smoke untill i step on it, but when on the high way i can feel it shit into something an then just rollin along it puts out some good black smoke, an if i step on it the truck MOVEs and blows lots of thick black smoke.