Greyhare my friends kit came with tubing to run it out the back next to one of the exhaust pipes. He wanted to put it infront of the winshield so it would look like a purge valve on a NOS system. the guy who"helped" installed it said that posing to have nitrous was pretty sad. I'm glad one of em was level headed about its placement
as for performance it did make a difference when he'd hit the switch i could hear and feel the turbo wind up even faster.
I would try this my self but to gain full benefit from the massive chill some serious tuning skill would be in order. I have niether the abillity or budget so more or less a free idea to somone with a core and a budget for it. Although I think this would be done as an option to water/meth injection due do similar weakneses i.e.bottles/tanks. The massive chill from releasing compessed gas isn't something to pass over so litely IMHO. one thing to keep in mind as the paintball guys cold tell you co2 valves can freeze shut so a 2 tank system with a freeze valve may be in order. unless some one could test it we will never know if its bennefits would outway the cons.
Gutted air box, K&N drop in, MAF screen put back in , NGK tr-55 @ .55, 180* drilled t-stat, INTENSE 3.4mps, Aeroforce, High-flow cat, and one BIG F-ing smile.