yes it changes the speedo, but i have 4:88's and running 35's and mine is almost back to stock. when the old lady is running 40mph in her runner ( stock) mine is reading right about 38mph..close enough for me..


really didnt read the post,but did ya lift the rig at all? if so, you may want to move that !@#$@ proportioning valve on the rearend..if not, sounds like you still have air in the lines ( if you disconnected them)