I know what the article says, but the author seems to misunderstand how the system works.
The systems has regulators that step the air pressure down from thousands of PSI in the tank to a much smaller, regulated number at the nozzle that gets sprayed into the intake.
From the source company that sells the system:
> The very low temperature medium pressure air stream is then throttle one more time in the Electronic Pressure Regulator before being discharged into the engine air intake tract. The throttling effect that occurs here is small compared to that which occurs at the Mechanical Pressure regulator but, similar in nature.
The tuner can adjust the pressure that is being discharged into the intake tract, but that's not equivalent to the pressure in the manifold.
The system works by having the air expand rapidly in the intake, causing a rapid cooling effect.
The company describes it better on their own site: https://casupercharging.com/tech/#system-overview
EDIT: There is some mention of an "isolation valve" but not within the "Theory of Operation" section of the company's own description: https://casupercharging.com/tech/#system-overview
So there might be some scenario where the system shuts off the intake valve, too, but it's weirdly unclear from their own system description.
The systems has regulators that step the air pressure down from thousands of PSI in the tank to a much smaller, regulated number at the nozzle that gets sprayed into the intake.
From the source company that sells the system:
> The very low temperature medium pressure air stream is then throttle one more time in the Electronic Pressure Regulator before being discharged into the engine air intake tract. The throttling effect that occurs here is small compared to that which occurs at the Mechanical Pressure regulator but, similar in nature.
The tuner can adjust the pressure that is being discharged into the intake tract, but that's not equivalent to the pressure in the manifold.
The system works by having the air expand rapidly in the intake, causing a rapid cooling effect.
The company describes it better on their own site: https://casupercharging.com/tech/#system-overview
EDIT: There is some mention of an "isolation valve" but not within the "Theory of Operation" section of the company's own description: https://casupercharging.com/tech/#system-overview
So there might be some scenario where the system shuts off the intake valve, too, but it's weirdly unclear from their own system description.