i just installed a vortech entry level carb supercharger it produces 7-9 psi the car runs pretty good just a few things i have a holly 750 doble pumper at full throutle my fuel psi goes from 6 to 3 psi and when i come down from full throttle the car wants to shut off my question is do i need a blow through carb,bypass valve,and a better fuel system andwhat is a blow through carb been looking but doesnt tell u