Search found 15 matches

by Dordogne
Sun Oct 27, 2019 10:59 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

What do you mean by “error” - like a DTC or a speedo error?
by Dordogne
Mon Oct 07, 2019 7:44 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

does anyone have the spreadsheet link for all the tire sizes? The spreadsheet is here, but it's kind of a cluster with how many people are using it at any given time. I suggest you make a copy of it in your personal Google Drive. https://docs.google.com/spreadsheets/d/1mWnuQZlDTUGjKjmJje1QJIR8Z2c7K...
by Dordogne
Tue Mar 19, 2019 4:13 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

275 65 20 Radar Renegade LT tire on a 2013 F-150. Spreadsheet shows 0A45. I input this and I am 6 MPH off. Speedo shows 70 and I am traveling at 76 per the GPS. I have tried the GPS calculation and still off by about the same. What in the world am I doing wrong? As far as I know, this doesn't work ...
by Dordogne
Wed Aug 08, 2018 9:32 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

ke5adb wrote:
Fri Jul 06, 2018 1:28 am
On my 2000 F350 V10, I was able to change the value of rotations per mile in the ABS config. I also set the PCM to re-learn.
Interesting, did that change your speedometer? I would have thought that the sensor on the trans output shaft would be used.
by Dordogne
Wed Apr 25, 2018 8:02 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

sleepy wrote:Is there a coded database of codes?
No need, just use the calculator. The precision you can set it is literally to the nearest millimeter of tire circumference.
by Dordogne
Sat Mar 31, 2018 9:16 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

i have done speedo correction with HP Tuners on a 2017 Ford F150 Raptor cause we put 35x12.5x22 after that i got wrench light with DTC U0422:00-2F in PCM and P160A:00-AF in TCM The only way to fix the wrench light is re programming BCM with IDS and do Powertrain ->Service Functions -> relearn vehic...
by Dordogne
Sat Sep 23, 2017 3:25 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

Has anyone successfully completed a tire size change for 2011-2014 F150 using this method? To my knowledge - no. The 2014 and earlier trucks are on the last generation of as-built as I mentioned, and this doesn't seem to work in any Ford vehicle that isn't on the current generation of as-built. Sid...
by Dordogne
Sat Sep 23, 2017 3:25 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

Has anyone successfully completed a tire size change for 2011-2014 F150 using this method? To my knowledge - no. The 2014 and earlier trucks are on the last generation of as-built as I mentioned, and this doesn't seem to work in any Ford vehicle that isn't on the current generation of as-built. Sid...
by Dordogne
Wed Aug 30, 2017 2:27 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

EDIT: It seems to me that no matter what tire size I try with a generated hex, it would not change for my 2011 Explorer model year. I think the hex values just corresponds to the preprogrammed tire sizes. Any invalid hex would just force the BCM to default to the previous tire size setting. There's...
by Dordogne
Wed Aug 30, 2017 2:20 pm
Forum: Beta testing
Topic: Setting arbitrary tire sizes for speedometer calibration
Replies: 83
Views: 73964

Re: Setting arbitrary tire sizes for speedometer calibration

dstangland wrote:I did this on my 2017 super duty and it worked great. My speedo matches my gps. Only thing is that I have a check engine light on now.. How can I remove this?
The FORScan devs are working on a PCM relearn procedure that's available in beta versions. Check this post out.