Ice on intake runners?

[adey]

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote (SilviaDriver @ Aug. 14 2002,02:52)</td></tr><tr><td id="QUOTE">spraying Nawwzzz haha..nah spraying Nitrous i believe..cuz they got this new thing out where when u squeeze nitirous..it goes into ur intercooler..some new thing..forgot who made it..think it was Venom?</td></tr></table><span id='postcolor'>
Actually they DO spray nitrous oxide on (not in) the intercooler. a more popular choice (since it's cheaper) though is to spray water. Getting the intercooler fins wet allows it to dissipate more heat, faster. That's the same reason (along the same lines of) why we sweat when hot.

As for spraying nitrous oxide-- I think mainly it's beacuse a highly pressurized substance will cool down dramatically when released into a low pressure area-- sort of like how a can of hair spray (or spray paint or airbrush propellent) gets cold when you spray it.
Whether N20 has better 'cooling' properties than water though, I'm not sure. I imagine it must, or ppl would just put a bottle of pressurized water/air and spray that instead.