Hi guys,
I have had the power fc on 3 other GTR's in the past and agree about the glitch I experienced across all 3 accounts.
I now have a vipec and at the juncture where I'm reaching the limits of the unit...I've ran out of inputs as I need more than one for the ECA and boost switch. I've also Exceeded the limits of the map sensor as it only supports 2.5bar = 22psi (I'm moving to a flex tune).
For these reasons I'm going to the blackbox and after talking to Yavus, I was informed that the technical advantages is that you have control on fuel temperature compensation + the sequential ignition is dedicated to each coil pack via 6 dedicated outputs (rather than sharing each ignition output across 2 coil packs).
The M3 is a scalable ECU.
Hope that helps for all looking for information.