2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

s5 turbo engine in s4 turbo

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Old Apr 1, 2004 | 06:12 PM
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p-townrotary's Avatar
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From: p-town
s5 turbo engine in s4 turbo

i know you can put s5 engine in s4, but i heared that some modifications r req. can anyone tell me what mod do i need to do to fit s5 t2 engine in my s4 t2. is this a good idea since i need to replace my engine? thanks evryone! good to know u r here.
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Old Apr 1, 2004 | 07:20 PM
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Digi7ech's Avatar
I break Diff mounts
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BAH DAMN FORUM DIDNT POST IT!

Anyways.

You need
S4 electronics(Harness,ecu,injectors,tps,bac)
Front cover replcaed w/ a S4 so you can use a Mech OMP or go premix.

You will no longer have your twin scroll and the boost solenoid for S5's on the oil neck will be useless.

A S5 is a better engine because it makes more hp but they are harder to find parts for if something breaks.
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