I test drove a 03 400 auto AC Lime green just like my sled looks mint!! But one thing that I found when you gave it some gas it didn't have that instant go feeling ...When I bought my Polaris 325 Mag auto,it was kind of like that but 2500KM later it is a lot better my ? is do the AC auto get better after you get some miles on them.. And does anyone know what causes this???? Thanks

 

I have a 300 so I don't know anything about the 400's. But all of the current AC models are built for torque not speed. Hope this helps you