Ive been reading about nitrous controlled wastegates but I have no clue on how they work???? can someone shed some light on this?

what it does. So you have wastegates to control boost and it's normally set by a spring in the wastegate that gives you X amount of boost. Well what this controller does is gives you a imaginary varible spring . You start out by putting a real small spring in your wastegate like a 3-5psi spring or no spring at all which is what I perfer. And the way this controller works is that you set CO2 pressure curves and these curve are pressure thats applied to the same area in the wastegate as the springs are in. Your programmed CO2 pressure curve does the same thing as the springs do only you can vary it with the pressure curves. So you have a imaginary spring that you can tell what to do. Now keep in mind that you will have to experiment to find what CO2 pressures give what boost psi results. Example...15psi on the controller might give you 10psi boost. You just have to figure that out so start with low CO2 psi settings at first till you get an idea of what boosts you can expect. This is the style boost controller used by the fastest heads up racing in the country.