hey my dad got a dynafs chip in his rhino, it revs out way better now and we gained about 15 mph out of it, but its way better for the mud and climbing now
Well it increased top speed from 45 -50 km to 65-70km. In all honesty the top speed is not really a big deal to me. I find anything after 60km/hr going down a gravel road it gets a little squirly. The main reason I got one is to get rid of the reverse limit. when it comes to backing out of a mud hole I hate when it cuts out and spudders. I have had no issues with it and like it.
On a side note I have been having cold weather starting issues. I have found on another site that these rhinos use a motorcylce rellay for there fuel pump that freezes up undo cold conditions. You can pull it out to warm it up or replace with a nytro snowmobile relay pt#8fp-81950-01