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I was watching a snowmobiling show earlier this winter and they did modifications to a F7 to boost the horsepower to 151. They open the pipe up and did some mods to it, they drilled holes in the air intake and replaced it with foam, they did clutching to it and changed the timing key. I guess what my question is, does anyone have any more information on this or not?
thanks,
shane
thanks,
shane