Kinarfi, do you know if the relay for the injectors and coil can be set up on a manual switch. I have put the fuel pump and fan on seperate power lines and switchs to try and get rid of my surge, it has helped and it seems to have made more power and smoother running. I physicaly checked the wiring on my t2 to make sure the wires went to each unit because on mine the wiring is very bad for colors and size of the wires, even from one side of a connector to the other. The injectors are activated by a ground from ecu and coils are straight power, there is one relay for both.