Is there a difference between an s4 turboII and s5 turboII?
08-16-11, 11:41 PM
#1
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Is there a difference between an s4 turboII and s5 turboII?
Well I just have a question?
Just like the title states, I have an s4 turboII with an s5 jdm motor turboII
It seems like they did a hack job and I'm thinking about getting another tII wiring and found a s4 turboII wiring for about$50 so please let me know guys ASAP thanks once again...
Just like the title states, I have an s4 turboII with an s5 jdm motor turboII
It seems like they did a hack job and I'm thinking about getting another tII wiring and found a s4 turboII wiring for about$50 so please let me know guys ASAP thanks once again...
it's funny because it's true
08-17-11, 12:38 AM
#5
Yes.
Engine:
-s4 is 8.5:1 cr. s5 is 9.0:1 cr
-most NOT ALL s5 TII engines have a extra webbing at the base of the oil filter pedestal. This is a great upgrade over the s4 motor as this is a failure point on the s4's at ~450hp.
-thermostat neck with no filler cap on s5. s4 is aluminum w/ filler cap.
-waterpump is slightly different.
Electronics. Wiring is all different. ECU is different.
-s4 uses a AFM. s5 uses a MAF
-s4 has one TPS. s5 has 2 TPS's
-s4 has a mechanical omp. s5 has an electronic one(which will cause limp mode if removed)
-s4 has the twin scroll turbo setup
-s5 has a different turbo/mani with dual wastegate bores.
-Injector wiring could be different if the car is pre 87.5
Theres more I'm missing, but that's the main stuff.
...
The easiest way to install a s5 Turbo II motor into a s4 Turbo II car is this:
-Use the s5 engine
-use the s4 ecu(N332/N333) I don't suggest using a computer programmed for 8.5cr on a 9.0cr engine, but people do it.
-use the s4 engine harness.
-use the s4 AFM
-use the s4 throttle body
-remove the s5 OMP completely or convert to the s4 OMP
-use the s4 pressure sensor
-If your car is pre 87.5 with an injector resistor box, you will need low impedance(peak and hold) injectors.
Engine:
-s4 is 8.5:1 cr. s5 is 9.0:1 cr
-most NOT ALL s5 TII engines have a extra webbing at the base of the oil filter pedestal. This is a great upgrade over the s4 motor as this is a failure point on the s4's at ~450hp.
-thermostat neck with no filler cap on s5. s4 is aluminum w/ filler cap.
-waterpump is slightly different.
Electronics. Wiring is all different. ECU is different.
-s4 uses a AFM. s5 uses a MAF
-s4 has one TPS. s5 has 2 TPS's
-s4 has a mechanical omp. s5 has an electronic one(which will cause limp mode if removed)
-s4 has the twin scroll turbo setup
-s5 has a different turbo/mani with dual wastegate bores.
-Injector wiring could be different if the car is pre 87.5
Theres more I'm missing, but that's the main stuff.
...
The easiest way to install a s5 Turbo II motor into a s4 Turbo II car is this:
-Use the s5 engine
-use the s4 ecu(N332/N333) I don't suggest using a computer programmed for 8.5cr on a 9.0cr engine, but people do it.
-use the s4 engine harness.
-use the s4 AFM
-use the s4 throttle body
-remove the s5 OMP completely or convert to the s4 OMP
-use the s4 pressure sensor
-If your car is pre 87.5 with an injector resistor box, you will need low impedance(peak and hold) injectors.
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08-17-11, 10:39 PM
#9
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NO difference at all..they both suck money out of your wallet.
Like My Ex-wife..
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Like My Ex-wife..
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