If I had a 88 turbo and a 89 turbo engine what would i need to make the engine work in the 88?

 

You would need to swap over the computer/ecu harness/afm.

 

ok, well what harness do i need to make a s4 turbo work in my car?

 

wait ... u wanna put s4 in ur s5 ... or s5 in an s4.....ull need the respective harness, ecu, and afm like said before



s4 in s5 ... ull need s4 harness ecu and afm......



s5 in s4 .. ull need s5 harness ecu and afm

 

ok, I get ya, but when you say harness what do you mean? only the engine harness? or does the engien harness go to the car like in the dash as well?