my friend did a na to turbo conversion but it was from s4 to s5 but he does not know what to do with the wire harness on the left side because it does not plug in he has the computer and the wire harness from the right side what does he need to do to make it work with the s5 computer

 

Im not quite sure exactly what youre asking. If youre asking if you can use the S5 ecu to run the S4 engine, no you cant. I *think* that if you are using the S5 ECU, you will need the S5 engine wiring harness also.

 

I get it...(after reading it twice...)

So the two plugs coming in from the drivers side don't plug into the ECU as the engine harness does...

If that's the case, I don't think that they are really important...reason being, I left mine unplugged when installing the microtech EMS (the two plugs that come from the drivers side that would have plugged into the stock ECU).

 

Maybe it's only one plug...at any rate...

 

he has the s5 engine and computer and one wire harness the one on the right side but he need to make the one on the left the one that is in the car that goes in by the clutch master

 

bump