Take the carb you have and tune it properly for the engine to run as good as it possibly can on MOTOR.........do this, then turn the spray on and forget it. No matter how much nitrous you spray, the CARB will NEVER need to pass more air than the motor does while in N/A trim. The more nitrous you spray, the more it displaces air from the intake and N/A power goes down, because carb is drawing less air and fuel.