VS Gas stall at 60-90km Idle

[Tadz]

Recent mods MSD Coils and Big mouth CAI car is also recently serviced
The car runs fine on gas as long as i have a slight amount of pressure on the throttle ( You can see how this is a problem while doing 80km down a hill.. i have to brake and accelerate at the same time ). I have been talking to some people and the only thing we can think of is the gas freezing as a result of the CAI, But with aoutside air 17c I dont see how this would be a major problem, Has anyone else got any suggestions for me? Its only while the car is traveling between around 60km to 90km it will stall if i have no pressure on the throttle ( Runs 100% fine on Petrol )
Thanks in advance!

[evilbunny]

The gas regulator..?
Is it higher than the water bleed on the engine.
Losing any fluid.?
Air bubbles go to the highest point , the regulator.
Vacuum hose on underside of inlet manifold ..check it for movement.