Snowmobile racing rules are set to change in 2015 when the manufacturers will mandate fuel injection on 600cc race engines. There are many benefits to this including better fuel efficiency, easier tuning, power restriction and better re-sale. This means a Junior racer will likely be able to ride the same sled with the same engine as a Pro or Pro Lite racer since manufacturers will be able to “detune” the engine. Also, instead of a pure racing engine these engines will be closer to a “production” snowmobile engine so used race sleds should be more attractive to non-racing riders when it comes to re-sale. Of course, all this could change at the next ISR meeting, but for now this is the roadmap the rulesmakers have set moving forward. With that, let’s look at what may be powering your 2015 race sled.
Here is a video explaining how the E-TEC system works:
Here’s a video showing how Cat’s new injection system works:
Here’s a little bit of info regarding Orbital engine technology.