Link G4+ Subaru WRX (5-6) Plug-in ECU Control for AVCS?

[2020Racing]

Hi!

I have a GC8 with a GDB 207 bottom end and looking to upgrade the heads after a failure. 
I'm looking to run some Spec C heads with AVCS (variable valve timing). 
Would my current ECU support this?

 

[Adamw]

Yeah I know of a few guys that have done this.  If it is the engine with 4 x AVCS cams then IO gets a little tight so you need to shuffle around quite a few wires to free up the correct DI's and auxes but it is doable.

[2020Racing]

Thanks so much Adam, That is great. What sort of output does it need to control the solenoid?
It will be single AVCS. 
Thanks!

[Adamw]

Only Aux 1-4 are capable of controlling VVT solenoids in G4+.  So you can use which ever two of these are easiest to free up.  I would say the easiest are Aux 1 & 3.  Aux 1 is originally used for the fuel pump relay, you could move this to one of the spare ignition drives on the expansion connector.  Aux 3 was originally used for the AC clutch.  If you no longer have AC then it is good to go.  If you still have AC then move this wire to the other Ign drive on the expansion connector. 

You also need the two extra cam position sensors connected to DI 1-4.  DI 1 was originally used for the start signal - this is not really needed so you can just snip this wire and connect the cam sensor.  The other cam I would probably connect to DI2 - originally the power steer switch.  You can move the power steer switch wire to one of the DI's on the expansion connector.