S5 Turbo Swap, [EM] Harness Qs.
 

the car is 91, non A package, small brakes. 5 speed.

It's complete swap as far as motor, ECU and all sensors.

I adpated NA wiring so I dont have to deal with 2 plugs that go form emission harness to front harness.

I know that in 86-88 to get turbo harness working in NA car you have to seal with these plugs, X-15 and X-16. I've done it many times.

My question is: Do i have to deal with these plugs in 89-92 car?

the car runs fine but the existing modified NA harness. The ahrness itself is very shitty, especially the wires to primary injectors. I'm experiencing some knocking when I stabb throttle. I have brand new s5t2 harness, and I wanna know if it's plug and play.