yes the stock ecu will run fine with none of the below plugged in..
O2 sensor
yellow 2 pin plug in inlet manifold (not sure what it does!)
cold start injector
T-vis
air temp sensor (if fitted)
brown water housing plug at the back of the head (green one has to be AFAIK)
i think there are a few others, but so far those are the ones i have found..the ecu might not like it.. but it will start and run fine..
Matty
