Pico

Hi. Hopefully not been covered before. Have a r34 auto coupe. Was originally turbo,now engine replaced with a series 2 rb25de engine. Problem we are having is the TCS/slip lights come on after start up and seems box is stuck in 3rd gear. Reverse and neutral are fine. Bit of head scratching going on. Ecu is for auto. Only thing we can think of is throttle body with sensors are different. Engine was from a manual car. Can anyone shed some light on this please?

Wtb r34 auto ecu Wtb r34 auto ecu. Toowoomba to goldcoast