dude you don't wanna waste your loot on a answer roost boost.they don't work priod.they were a gimmick.nobody has been able to ever prove that there was anything to gain from one.if you want a serious improvement from your ignition get a PVL ignition system.they are expensive.but well worth every penny.

 

Back in the 80's I had a Yamaha Warrior with on and I raced sand drags with it. My times actually got slower with it, a big waste of money.