Hey Lantana, the system I'm looking at getting is a wet system, it has jets that range from 50hp, 75hp 100hp and 125hp, I'm going to set it up to 75hp of course (i want to keep my engine lol) but the person selling it has a legitimate store and tells me no tune required, but a garage that does refills tells me he must tune it. So I'm getting two sets of infromation and I dont know who to trust It's hard when your young and want to do up your car, and pennys are hard to come by lol I want to spend my money wisely!