s4 and s5 fuel intector

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Sep 10, 2008 | 10:42 PM

nopistonsPWR

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BRAP BRAP BRAP

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From: Columbus,OH!O

s4 and s5 fuel intector

i was wondering if you can use s5 fuel injector on a s4 motor...???

Sep 10, 2008 | 10:50 PM

farberio

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From: Norcal, Bay Area

Nope, the connectors are different and I believe one is high impedance and one is low impedance.

Sep 11, 2008 | 03:18 AM

prof

Wire monkey

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From: Camberley, Surrey, UK

S4 injectors are low impedance, so there is a resistor pack in the wiring harness. It's possible if you use the S5 harness for the injectors and then use the high impedance s5 injectors - the ECU will drive them just the same, and they are the same physical size.

Its a lot of work...

Sep 11, 2008 | 10:24 AM

Sideways7

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From: Temple, Texas (Central)

Quote:

Originally Posted by prof

Actually, only early s4's are low imp with the resistance pack. From 87.5 on, they were all high imp. They still have the different connector, though.