Hi Greg, and welcome to FOC-U.Here's some interesting information regarding the Ivan's installation, what it does, what it involves:http://www.cartestsoftware.com/fz1/jetkitinstallation.htmlAs said, Mike is your man for all things gen 1, a veritable fount of knowledge; sure he'll spot this and be able to give you any help and advice you need. Definitely worth doing, the transformation is very grin-inducing and the bike is still very easy to handle, even with full monty as opposed to slip-on kit (kind of two different stages). As well as the outright performance gains, it's smoother at all throttle openings, making the bike more manageable in traffic etc. Highly recommended