s4TII to s5TII swap.need sugestions
 

ok i just bought a front clip from japan. (S5 TII).my car is a 87TII.what is the best way to do this with the wiring and everything.i know that the wire connectors are different.but i reaaly cant find all of the parts i need.like main harness S5TII complete dash etc:::.please help need all the info i can get.thanks, jason

you can just switch your s4 sensors onto the s5 motor, also, you'll need to swap the oil pump housing (due to the mechanical oil metering pump vs. electrical omp)... fuel injectors........ pretty sure everything else is a plug and play deal....... but not positive....


note..... you might have to swap throttle bodies also

come on please help this guy out. Bump to some more advice

There are MANY MANY threads on this. Search.
The EASIEST and least headache way is to swap EVERYTHING from the S4 to the S5 bare block. I mean BARE BLOCK. No sensors nothing from the S5 and using the S4 front cover since you cannot use the harness from the s4 to the electric OMP.
If you don't have emission testing, then it's even easier.

Also forgot to add.....
If you look at your FSM ECU diagram, the S4 and S5 ECU *DOES NOT* have the same pins.

i just tried the search option and i couldnt find anything :(

geezzz... I need to add something to the FAQ for FC thread on this... there is probably only thirty other threads on this same exact question.

Use the S5 block, Intake, Turbo, manifold, use the S4 ECU and harness and sensors, take the S5 front cover and MOP off and replace with S4 ones.

thanks ice mark

are you on crack ........... i said that in my post......... then you replied "come on... help this guy out" ... wtf....... icemark said what i said!!!!! thats just funny!!!!

thanks to every 1 that replyed.and yes i searched but in alot of other threads they say the bare minimum.since i sold the s4 harness's i need to locate a main harness and engine harness.but i still have everything else except.the s4 throttle body with tps.i sold that complete as well.damn

no problem.... good luck w/ the project

thanks