Im in the finishing stages of my 2nd gen turbo swap and do I still need to keep my stock ECU? Since the harness is gone and not providing any power anyways? Thanks

 

Yea you can pretty much lose the ecu and wiring harness.

 

Pull out the water temp sender wire and the wiper harness. Keep the stock plug leaving the water temp wire and the power wires for the ecu. You can cut the power wires and use them for power for boost controller and the haltech.

 

depending on the model you have, you may also need to retain the alternator wires

 

Yea I cut out and made up my wiper harness. I didn't cut the power wires I think, I justed taped them up.

 

Me 2 I had to redo my wiper harness like Racer723 but I kept my stock ECU because 2 out of the 3 connectors are for main engine harness and the 3rd one is basically everything that`s writen on the fuse box under your steering column.

 

For which model FC??

I ditched my stock ECU looooong ago and the only feature I lost was the stock boost gauge. Absolutely everything works on the car still, PS, PW, cruise, wipers, lights etc.

I had to lengthen the wire for the stock coolant temp gauge, but other then that single wire (and seperating the wiper/cruise control harness from the engine harness) I lost no features and did no other wiring.

This is an S4 TII.

 

Mine was an S5 na n350