1) Pin 1 (GN/OG) is the 12v feed, Pin 2 (BK/RD) is the ground switched by the PCM.

2) The system and cam is designed for a continuously variable adjustment of advance. Although some have used it as a two position system, it really needs the cam pulley to be set for an optimum power position at fully advanced, which is around 30 degrees away from the factory setting.

3) About 7,200

4) Don't know, but most ECU's provide a negative (ground) output which depending on physical configuration will be either high current (for ICV, Injectors, VVT, etc) or low current (for indicators, relays, etc).

To run the VVT as intended you really need a Pulse Width Modulated (PWM) output driven by a closed loop algorithm. I don't know of any 'road' ECUs that offer that facility, your moving towards clubman competition equipment.

A few ECUs can operate a PWM output in open loop. That would allow programming, as you indicate you want, the ability to have a low/high revs setting ie 30%/70%, but what would give optimal cam position.......

VVT doesn't add any power BTW, it only improves flexibility.

Martin