You may also need the ecu since it controls auto tranny. It will most likely freak without those signals since the manual ecu isn't expecting anything from the tranny. Much easier to just find a manual car & trade yours in for it.HI. Has anybody done a auto to manual tranny swap? I am thinking about doing this in the near future. I know i need a manual trans, clutch, pedal cable.. will i need a sensor of some kind?? any thoughts would be good(hear ya)