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bpf 07-25-2010, 10:03 AM Hi. The TTS doc says that on some bikes one may tune the front / rear sprocket ratio (allowing speedo cal), does anyone know if this works on a 2010 DX? Thanks! bpf 08-02-2010, 07:08 AM I just got my MT this morning: yes it is possible to recalibrate the speedo for 2010 DX: this does not appear in the ECM constant menu, but just before reflashing the map. bikerider58 10-03-2010, 10:49 PM Does the retuning allow you to change wheel size, or just sprocket sizes? stever975 10-04-2010, 06:15 PM I just got my MT this morning: yes it is possible to recalibrate the speedo for 2010 DX: this does not appear in the ECM constant menu, but just before reflashing the map. Does the retuning allow you to change wheel size, or just sprocket sizes? There's a VSS calculator (I attached a screen capture) that will calculate the VSS "value" for the various HD models with selectable tire sizes and sprockets. This calculated VSS "value" is entered during the programming process to calibrate the speedometer as "bpf" mentioned. bikerider58 10-04-2010, 07:43 PM excellent. Thanks for the screen shot. It clearly shows that you can adjust for any size wheel combination. | ||