Quick notes on this kit:
If you have a turbocharged car, an easy way to increase your cars performance is to lower the incoming air temperature to the motor.
The purpose of your cars intercooler, is to reduce the incoming air temperatures, however when your driving aggresively, or if its really hot outside the incoming air will begin to raise in temperature.
Thats where the Nitrous Express Ntercooler kit can help. This kit takes compressed Nitrous and sprays it directly onto the intercooler. Because the sprayed nitrous is usually 0-30 degrees fahrenheit, it can buildup cakes of ice on the intercooler, which substantially lowers the incoming air temps.
10 lb bottle complete kit $459
15 lb bottle complete kit $489
Link with more details :