Was wondering if anyone has used/tried these in their sleds and what they have to say about them. The Fitch fuel catalyst drops into your fuel tank and you are done. It does not dissolve and lasts the life of the engine. It is supposed to give you more HP and torque better fuel mileage with less emissions and carbon buildup. Sounds like it would be a sure shot winner for RX-1 owners for the correction of carbon buildup alone. Type "Fitch Fuel Catalyst" and do a search. There have been lots of dyno test and testimonials and none are bad but of course that is their site. The testimonials though are coming from bike magazine editors and such with rave reviews. Check it out or add your info if you have used this product or know of someone who has and let us all know good or bad.