#6441, "RE: ZEX Nitrous Kit for sale" In response to In response to 1
It is a "smart" system but it comes with a switch to engage. It doesnt do it automatically at a set rpm. The kit comes with a 10lb. bottle, lines, mounting brackets, jets, switch, and nitrous management unit. As for why- I bought a turbo kit. I wanted more power all the time, not just for traffic light races.