Is the Evo's drivetrain controlled by the ECU?
Because I've heard about symmetrical AWD on Subaru's and I don't know what it is and if Evo's have the same idea or something completely different.
Does it mean that more power goes to wheels with more traction?
Like at a stand still the drive ratio:
25%|25%
25%|25%
And during acceleration:
20%|20%
30%|30%
Is that what Evo's do and is it controlled by the ECU?

 

Are you asking about evo's in general or Evo X?
Evo 8 and 9 have ACD and is not computer controlled,so to speak.

 

no, the awd system for the evo's ratio is more like, when u launch its at 40 front 60 back, once the back wheels start loosing traction the power shifts more up to the front, it all depends on if ur launching, or if ur turning ect. i dont think the power is ever equal for all wheels, just becuase its equal doesnt mean it would give u best acceleration

 

but allinevo is right about the ACD

 

Well I would imagine the wheels would never get all 25% drive, because the weight distribution is never going to be perfectly 50/50 left and right and front and back. But I'm wondering is that the base that the system works off. and what is the system on the IX? I searched for Active Center Differential and I couldn't find any good diagrams or explanations of what's on the Evo, and I'm more looking into the IX than any other model.
-TD