I wanted to sort out the VANOS solenoid and the 3 Wire PWM valve.
My initial thought was to use TIP121's to drive it all on a piece of vero board then it hit me that the stepper chip is sat there doing nothing, what a waste!

So for the VANOS i set the IAC2 output to change state between 2300 to 4000 RPM (I haven't tried this setting on the engine yet its just an educated guess).
I then use one of the outputs from the stepper pin 37 on the MS2 channel 1 to drive the Ign IGBT (which i have spare due to using the 3 leds to drive the COP wasted spark).
the 3 wire bosch IACV is a little more tricky as you have to lift pin 3 in U3 of the MS2 CPU card. I connected pin 3 to the PWM idle signal on pin 34 of the MS2. This then gives the push pull signal required to directly drive the 3 wire IACV at pins 35 and 36.
I now also have a spare port at the CPU (IAC1) that can be set for pretty much anything really, I'm going to have a play with a second condition on the VANOS so that its not just RPM but load dependant also or maybe a totally different output.