S5 turbo on S4 TII ECU?
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Junior Member
Joined: Jun 2020
Posts: 13
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From: Latham Ohio
S5 turbo on S4 TII ECU?
Google search never showed much results so I figured i would ask here.
I have heard you can bolt on a S5 turbo onto a S4 TII engine as long as you have the manifold. My question is though- can you run the S5 turbo with the S4 ECU?
I have heard you can bolt on a S5 turbo onto a S4 TII engine as long as you have the manifold. My question is though- can you run the S5 turbo with the S4 ECU?
Rotary Enthusiast
Joined: Sep 2010
Posts: 827
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From: new zealand
Yes. The s4 ecu cares not. I put a whole s5 motor in my old s4. Little bit of wiring and obviously no oil metering pump, so blocked off and premixed. I also fully deleted emissions and cold start etc. I did have a gizmo fcd, unsure if s5 turbo has a higher boost watergate spring in it? So that might be a problem for the s4 ecu.
Joined: Mar 2001
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