Let me start by saying... turbo'ing a 2-stroke is useless as a "Performance" add on. That's why people don't do it. With high pressure on the front side... you mess up the scavenging effect of the tuned pipe. Not to mention... the lower-half of a 2-stroke is already pressurized to force feed the top-half. So... if you force feed it... you could blow that big end of the rod from over pressure, on the down-stroke.
Here's the deal. On Snowmobiles... most of the time, you are running high altitude. So, you are fighting low O2. When they turbocharge them... they are using it to essentially bring the manifold to sea-level. (Not to run the engine "Under boost")
Now... the Propane is interesting... but it makes sense. At high altitude, and very cold temps... it's hard to ignite gasoline. Propane, on the other hand, would be very easy to light.
This combo would make one heck of a wicked high altitude sled... but it would be utterly useless in our PWC.
