A 2 bar sensor can't measure these kinds of boost - max. is 1.1 bar.
So you probably should have a 3-bar map-sensor (ask MSD).

Check voltage from map-sensor with ignition on, engine off.
2.2V is 2-bar, 1.8V is 2.5 bar and 1.5V is a 3-bar map-sensor.

2-bar is aps-02, 2.5 bar is aps-06 and 3-bar is aps-05.