I have an 88 corvette with the 165. I have the 4+3 manual transmission(super T10 4-speed w/ 2speed auto inline). When the car comes up to a certain temp, the auto shifts to OD. if you give it a lot of gas, the auto kicks out of OD then back. There is a switch on the stick to turn the OD off, but you have to wait until it comes on. I have heard there is a way to control the tranny in the chip so that it never comes on automatically and only shifts to OD when you press the button so you can manually control it. Anybody know how? I have looked in my bin using winbin and tunercat and don't see anything in there specific to it. I do see many things to controll an auto like TC lockup etc. Is it something in there?