For supercharged or turbo applications where nitrous is not an option, NX offers another alternative, the “N-tercooler”. Using either nitrous or CO2 this unit can reduce air inlet temperatures dramatically. In a recent dyno test, a turbocharged Honda, equipped with an NX “N-tercooler ”, increased its baseline by an astounding 52 horsepower! If it makes horsepower, it must be Nitrous Express!
thats what the NX website says.
but its an oval bar that hooks to the front of ur intercooler, then when you arm it. it automatically shoots the co2 into ur intercooler when you are at full throttle, so the air is a lot colder going into your engine, and you gain HP. i just dont know how well it works.