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2004 STi flex fuel wiring


WerksAuto

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This is my first link ECU install and I am to the point of wiring up the flex fuel sensor.  I have the Link Sensor and the expansion loom.  I am fairly confident but want to verify that my wiring is correct.  I can use the expansion loom for a ground signal or if I dont want to use the expansion cable for just one wire, I can tap into an ecu ground.  I need to source my own 12v and do I use B27 DI 1 on the main ecu for my input?  

The IAT Sensor I can cut the temp wire from the oem maf and run that to the iat sensor and utilize the maf ground correct?

 

Thank you.

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Yeah all sounds ok.  The flex sensor is a digital signal so ground offsets arent that important.  You could likely even get away with chassis ground.  

DI1 is used for the speed sensor which is useful for many functions, I would be inclined to keep that connected.  DI9 on Pin D9 would be a good option - the Neutral switch isnt typically used in the ecu unless push button start.  

34 minutes ago, WerksAuto said:

The IAT Sensor I can cut the temp wire from the oem maf and run that to the iat sensor and utilize the maf ground correct?

Yep.  From the help file:

1jg8iET.png

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