I can't say whether it's worth the money or not, but I can say driving a turbo car in the winter is nothing like driving it in the heat of summer. I'm sure I gain at least 30-40rwhp when temps are close to 32 vs 90+ in the summer. I doubt their intake kit does much, but the intercooler spray may have some merit. C02 is a lot cheaper than using nitrous to cool the intercooler as well.
just my $.02 as I have never used the kit but have considered it. it would also add a safety factor when when running higher boost in the summertime.

 

C02 is actually colder air, therefore you would actually feel "something" when compared to "nothing".
Don't expect to gain MAD horsepower, but something is something, right?

All this is is a nitrous dry system that has C02 instead of nitrous.

 

Co2 cools to about -100 degress going from liquid to gas

every 10 degrees your intake charge lowers, you gain about one HP, k?

So if its 20 percent efficient, you gain 2 HP and reduce strain!
Reduve detonation and knocking too

Also, If the tank is in the back, it helps with the OK weight balance!

 

what happens to all the carbon? does it deposit in your engine? Eeeeeeuw!

 

it will probably just come out with the exaust, but is it as effective as nitrogen when it comes to expansion and compression? will it move pistons or just ignite? because eventually if you have too much compared to ambien nitrogen , you could even be loosing the element that actually turns your motor? To a small degree if you have more co2 than ambient air with nitrogen in it.

 

I dont think you're really using that much Co2, if anything it'd be cool to add a purge kit and get the same effect the nitrous guys do.