Just so you guys know small kits are simple and I mean really simple to use. If you have somebody that know a little about it nitrous is a lot of fun. It is the cheapest horse power you can buy!! The torque numbers it adds are insane. With a motor that's prepped for it it a lot of fun. Just don't jump into like I did! I went from a single stage 200 shot to 3 kits over 1,000hp of it and it didn't work out so well! lol