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cubeqtio

G4 evo 9 ver 1.3 to evo 4

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17 hours ago, Adamw said:

If you change your Evo4 wiring to match the Evo9 ecu then it will work fine.

Ok then. No additional relays needed?

as currently all works if using the test feature but when you turn the key to start there is no ignition, injector or fuelpump control. The fuel system prime works though.

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No there should be nothing extra required.  Pin 38 on the Evo 4 ecu works in exactly the same way as pin 57 on the Evo 9 ecu.  The ecu should ground this pin when the ignition switch is on.

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