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I just picked me up a new 2018 mountain cat 153 snowmobile what are some things you guys are changing to help perform better between 6 to 9000 feet elevation the gearing is 19/50 are you changing this or you leaving at stock. Looking to get rid of giant exhaust can was thinkin going GGB?? I am not looking to do any motor work or no turbo just looking at some things I could do to help it do a little better in the deep snow thanks