Cheapest method for speedometer calibration??

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Jun 1, 2016 | 11:53 PM

#11

J15

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Quote:

Originally Posted by Three B

I called some dealers today and some told me $140-170 while others told me Ford wont allow the 2015 2016 to be calibrated.. I wish I could get clear answers about if they can do it or not haha. I might stop in on Friday and get a better idea.

My dealer scrolled right through all the settings in front of me and there wasn't a tire size setting they could touch. Given that I already told them I'd pay for the calibration, I doubt they would have declined easy money with the laptop already hooked up to my truck.

Jun 2, 2016 | 12:17 AM

#12

fordtrk

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From: Pennsylvania

Probably not even worth worrying about. I have 35x12.50 18 and they are just a shade under 3mph at 60mph. Not enough of a difference to worry about. If I goto 37" then I'm sure I would recalibrate.

Jun 2, 2016 | 12:27 AM

#13

white_dc

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Quote:

Originally Posted by MNSportsman

Unfortunately, I don't belive that is correct. Ford made changes to the 2015 / 2016 where you can no longer adjust tire/gearing with the SCT. Kahdir posted a link already to the only product I'm aware of that will enable the change. For me personally, it's not worth the $200+.

Livernois offers the same product:
http://www.livernoismotorsports.com/product/HYT742502

There was a firmware update to add the tire size adjustment in the SCT x4 earlier this year. The livernois and hypertech correct the speedometer using the OBDII port as well.

Last edited by white_dc; Jun 2, 2016 at 12:30 AM.

Jun 2, 2016 | 07:10 AM

#14

Takeda

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From: Durham, NC

Mine was accurate:

https://www.f150forum.com/f118/f-150...y-test-310885/

Jun 2, 2016 | 07:40 AM

#15

MNSportsman

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Quote:

Originally Posted by white_dc

There was a firmware update to add the tire size adjustment in the SCT x4 earlier this year. The livernois and hypertech correct the speedometer using the OBDII port as well.

Ah, good to know! Thanks for the info.

Jun 2, 2016 | 07:58 AM

#16

Three B

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From: Houston, TX

Quote:

Originally Posted by Takeda

Mine was accurate:

https://www.f150forum.com/f118/f-150...y-test-310885/

Did you put larger tires or a level on it?? Or was this just verifying if the speedo was correct from the factory?

Jun 2, 2016 | 08:14 AM

#17

Takeda

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From: Durham, NC

Quote:

Originally Posted by Three B

Did you put larger tires or a level on it?? Or was this just verifying if the speedo was correct from the factory?

Totally stock, just verifying the accuracy from the factory.

Jun 3, 2016 | 03:47 PM

#18

Livernois Motorsports

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From: Dearborn Heights, MI

You are correct with regards to the OBD port, for the 2015 and newer trucks but the devices don't communicate with the ECM.

Ford moved the calibration files for adjusting the wheel size and speedometer out of the ECM and into the ABS control module, hence the need for a different device. The same would be true for the 2015 and 2016 Mustang.

That technology was licensed to select vendors for a specific time period and that period hasn't expired yet. It isn't a case of an just a tuner update.