I installed my thundermax auto tune tonight & used the speedo code for 2010 fxd which was the closest I found in the list of codes. Does anybody have a 2011 SB with a TMAX? What code do you have in for the speedo calibration?
Thanks!

 

I ended up using 47500 I think....no idea how correct it is but that's the best guess I could come up with.

 

With the latest version of SMARTLINK (2011.0.0) the speedo can be calibrated better than earlier versions of the software. Thier is now a speedometer calibration calculator. It allows you calibrate your speedo via tire diameter, pulley data, or speed indicated speed vs. true speed.

I used my GPS to check my bikes speedo and found that my speedo was 10% slow. The GPS said 55mph and the bike's speedometer was 50mph. The Speedometer Calibration Calculator came up with 41727 from the default of 45900 for a speedo calibration on my 2007 FXDL with a Perilli Night Dragon 180/60/17 tire on the rear. I checked my speedometer with the GPS after the change and the speedometer is spot on at any speed.

 

Cool I'll have to figure out how to rig up my GPS to my bars

 

Guys I'm resurrecting this post..................

I need to calibrate my speedo since I have the 30t front and 70t rear. Instead of using the GPS I want to enter original pulley tooth count of 67 and new size of 70, BUT there is no option to enter front pulley size of 30! How will thundermax know to get the right speed? Does the rear pulley dictate this entire speed calibration measure?

 

Update!!!!! Some info for those that may need it.

I hooked up the GPS and consistently over and over on the highway I kept going back and forth to 60 on the GPS and my speedo was at 69. The I went by my speedo and bang on the GPS was at 60.

 

Hey guys, i asked tech support but haven't heard anything.

What number is everyone using for the 30-70 combo?

My fuel gauge isn't even hooked up since I just go by miles on my odometer, but I need to be as accurate as possible on the miles.

Thanks!