Speedometer Calibration

[gleckie]

Hello guys,

Purchased a 2000 F350 and it has 10 lug Alcoa 22.50's with 275/75/22.50 tires. The speedometer is off by approximately 21%. I went to a local Ford dealer and they tried to flash the ABS module with the correct revolutions per mile but the speedometer disprepency never changed.

Would someone with AutoEnginuity be able to correct this for me?
If so, anyone around Greenville, South Carolina that could be willing to do this?
Any other alternatives to get the speedometer corrected?


Thanks for the help.

 

[Justin@DP-Tuner]

I believe Ford can only do it up to 35" tires. It looks like you have around a 38" tire?

AE should be able to do up to 40" tires at least.

I think Hypermax offers a unit called the Speedometer Calibrator. That should be able to get you fixed up as well.

 

[Jomax]

Will AE ever be able to adjust tire sizes for the 2015s?

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[Powerstroke Man 6.4]

Will AE ever be able to adjust tire sizes for the 2015s?

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Looks like after 11 MY they kinda slowed development for us diesel guys. I hooked my AE version 13.2 up to my buddies 13 and it or read was a few pids. I hope they start up again.

 

[Jomax]

Looks like after 11 MY they kinda slowed development for us diesel guys. I hooked my AE version 13.2 up to my buddies 13 and it or read was a few pids. I hope they start up again.

That blows.

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[crcrawford87]

Super lift also makes a speedometer calibrator that ties into the vss wire on the abs module. It has 2 settings and a rheostat for infinite adjustment