This info is on Doo talk. I searched on here first and could not find anything.
Sorry if this old news.
Ski-Doo Announces the 2009 MXZ TNT with a Rotax 600 H.O. E-TEC engine
For 2009, Ski-Doo is taking its industry leading 2 stroke technology from their Evinrude outboard engines, and making it available in the TNT chassis.
The new TNT will weigh just 415 lbs., have the same power as the current 600 SDI, and offer the following benefits:
78% better fuel economy than the closest EFI (*25mpg VS *14mpg)
82% better oil economy than Polaris 600 CFI (500km/L VS 275km/L)
3 years spark plug warranty (or up to 10 000km / 6600mi)
Easy cold start, one pull start
Virtually no smoke and smell
Incredible smooth idle
Less emission than any 2-stroke (even some 4-stroke)
Summerization function