Wiring Dillema

[FerociousP]

Originally Posted by 89Rotary

Hey guys, been ages since i posted on this forum.

I've got a couple questions.

I own a S5 N/A, and i just purchased a S4 TII Swap (Price was perfect)

I wanna keep my S5 N/A Gauge cluster in, and working properly. i either wanna update my S4 Motor to S5 (electronically) and swapped, or keep it S4. (which ever is easier/avaliable

What do i need to "update" to use a S5 harness?

Or

What do i need to change to use a S4 Harness?

sorry to ask these question, but i'm very new to the TII game. lol

You won't have any issues with the cluster at all., because you can't use the s4 electronics. The blocks are identical enough, but the electronics and emissions are different.

Things you can do:
- Use the s5 N/A harness if you are not using emissions.
- Change the throttle body (TPS), front cover, and all electronics (ecu, AFM, map, injectors) to S5 TII spec
- Block off emissions incl EGR

Things you can't:
Use the s4 harness
Use the s4 turbo electonics incl omp and injectors