Three things
1) You can spray water on the outside of the IC, I had one and it does help when the IC is really hot but won't do much for the drag strip.
2) You can also spray water inside the intake which works really well to cool the charge but it is pretty detailed on the amount you spray in and should use a high pressure pump and some kind of injector nozzle for good atomization. I use alcohol for even better results.
3) N2O on the cooler works too, much like the CO2 sprayed on the IC to actually supercool the charge going throught the IC. Problem with that is it is really hard on the metal. Frozen, then hot, then frozen, then hot really stresses the metal and WILL crack it eventually.