Installing G4+ into v8 STI

[danamaniac]

Hello, i am installing a wire in ecu to my wifes sti as currently has a unichip from the industrial revolution.

I think i have everything sussed except for the following;

1. What pin on the ecu do i connect the main relay wire to, and what do i set the pin as?

2. What pin do i connect the ignition switch to, and what do i set the pin as?

Do i need to wire a relay or anything externally?

[koracing]

I don't know that you need to read in the ignition switch unless the ecu won't power up without it turning on the main ECU control relay.  If the ecu doesn't power up until the main relay is powered, you aren't necessarily going to be able to do anything control wise with the ecu and those pins. 

You would have to know if key on provides power to the D2 and D3 pins without doing anything to those pins.  If it does not then you need to know if the main relay control pin needs to be grounded or powered to trigger the relay on and provide power to D2 and D3.  That will direct what you need to do next.

[Adamw]

This is all you need, no connection to the ecu at all.