recalibrating speedometer

[grywll42]

just had 4:10's installed in my 09,my question is using my sct tuner to recalibrate the speedo,can I just go in and change it with out affecting the tune or do I have to change the whole tune? I just didn't want to mess the tune up. thx

 

[drive_55_not]

If your tune allows you to change the gear/tire settings, You'll need to reload the tune and change those parameters then finish reloading the tune.

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[JeremyH]

Update tire revs per mile in the tune when you load it.

 

[grywll42]

went in and changed it with no problems, I guess it was easier than I thought it would be!! thanks to all