This is the only place that I have seen where someone has posted a direct comparison between the M1100T and the Nytro with the $1500 turbo kit.
"To give you a comparison,
we found a long hill, maybe 500 yards, with 18” of powder on top of a good firm base. Hill was maybe a 25 degree slope, nice open gentle pull. Run the
800 ProRMK or 800 E-TEC Summit up it and you’ll hit 35-40 mph and pull over the top.
M1100T, 50mph and pulling hard.
Nytro turbo and the skis will be wagging in the air and you’ll see
70mph if you have the, well courage, to hold the loud lever open the whole way."
http://maxsled.com/snowmobile/2011/03/dc2012riderjournal/