The AOD only uses a T.V.Cable for adjustment it is critical that it be set correctly or it will grenade itself,so set it A.S.A.P. Here are two good sources for AOD information www.becontrols.com and www.clickclickracing.com when you get to the be site you may want to click on Products,these parts are reasonable and will improve your AOD,part#'s RK-AOD and BV-1.4th gear is overdrive, it should shift between 45-50 MPH under normal acceleration depending on gear ratio.The 1-2 shift will improve with the RK-AOD kit.