With throttle blades closed, the cable clip should be aligned with the stud on the throttle body with no slack in the cable. Is my understanding anyway. I've set mine at this position, and adjusted the cable for slightly firmer shifts. I do notice a slight (1 MPG) decrease with the firmer shifts. Google "bionic dodge, TV cable adjustment". Has a pretty good article with pics. Or reference svc manual as said earlier for factory adjustment.