i have searched this many times and havent really got the awnsers i have been looking for.

i was think of buying a 91 s5 turbo front clip from a local JDM engine place. my car is a n/a s4 and i want to convert it to s5. why? from what ive been reading s5 are more relible and more power . time isnt a issue ether if i have to rewire the car i will.

can the two wirring harness be joined ? ether in the engine bay or even further back by seats,(witch is where the front clip is cut of

i have both turbo computers already so it can be wired as a s4 or s5 dosnt matter

just want the car to be clean and relible. if i get the front clip i should have most of the parts i need. just the drive shaft i would need to pick up.

if any one can point me in the right direction i would be apprciate it.
sorry i know this has probly been asked but i have had no luck finding anything

 

to be honest with you, anything can be done with money and time. If you want to take the easy way out.

Buy all S4 parts (uim, lim, front cover, etc.) then use the S4 wiring harness. It'll hook up. The problem with an S5 in an S4, the ECU plugs are completely different for the body harness.

Here are the links you should use:
http://www.rotaryresurrection.com/2n...o_s4_swap.html
http://www.rotaryresurrection.com/2n..._s5_diffs.html

 

so the s4 turbo harness will work on the s5 turbo motor? or do i need to change all the sensors?

 

i would like to keep it wired as a s4 because i already have the hks P-fcon computer

 

You need all the S4 sensors if you are going to use the S4 wiring & ECU.

You are really wasting your time. Just get a S4 turbo engine and swap in a S5 turbo + manifold if you want the few extra ponies.