Originally Posted by
Epstein
Sure, an ice setup would be a temporary thing. I've read a few things about that and it sounds like you can run about 10 mins on a 10lb bag on a ~350whp-ish setup in the heat. IATs are well under ambient. A meth setup will probably a hell of a lot colder as you're exploiting the huge energy of latent heat of vaporization.
A normal air-water setup would be perfectly suitable for the street or extended running. The IATs aren't as great, but are in the same ballpark. I looked over some data and you could basically sum it up as the difference between a cold air intake and a normal intake. It's a lot of fabrication, but I wouldn't hesitate to run one on the cars that most of us have.
I didnt really mean your efficiency goes to shit, just that its not nearly the same as running around with ice in the tank.
A lot of the time it comes down to how big of a reserve tank you've got, and how well your heat exchanger setup works, some stuff with production setups dont have that great of a capacity and can heat soak.
I believe a ford or two has something where it will use the a/c setup to cool the charge air for something like 10 seconds ?