Calibrating Speedometer for Bigger Tire Size using Forscan (2003 - 2007 Ford Superduty F250 F350)

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I created this video because I couldn't find a lot of information about calibrating the speedometer on my truck. My truck is a 2006 Ford F250. The tire size I have is 35x12.5x18. I found some of the information on different forums and some of it I figured out by playing around with different settings. I hope this helps someone. It has been a lot better having an accurate speedometer.

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29 сен 2024

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Комментарии : 37

@AndrewMcSpadden Месяц назад

does this work for a 2009 f350? and I have 37s

@allensshenanigans348 Месяц назад

@@AndrewMcSpadden Sorry, but I'm not sure about that.

@bighoss1009 13 дней назад

Proud to be your 1k subscriber!

@allensshenanigans348 13 дней назад

Thanks, man!

@jjscustomfabrications8234 11 месяцев назад

Esculent. Thank you.

@earthgrinder1 2 года назад

Would this work for a 2005 F150 STX?

@allensshenanigans348 2 года назад

Yes

@SalvageBoiz 3 года назад

whats the hex value for rev/mile 592?

@SalvageBoiz 3 года назад

got it calculated! its 20992 decimal and 5200 hex 35" x 12.8 22" rim website says 594 rev/mile. Im running a mickey Thompson baja boss a/t tire 325x50 22 if that helps anyone. this video helped me figure out some tire calibrations on my truck thanks!

@allensshenanigans348 3 года назад

Let me know if that works. The lowest revs per mile the module on my truck allowed was 600. Thanks for watching. Please subscribe to support the channel.

@allensshenanigans348 3 года назад

Please support the channel by subscribing!

@jorgerodriguez-wv4ul Год назад

I installed a larger fuel tank in my 2006 f250 6.0. Went from 30 gal to 51 gal. I get p0460 code after a long drive. My understanding is the computer needs to know I have more fuel or travel distance. Any idea how to use forscan to adjust this setting. Thank you

@allensshenanigans348 Год назад

I don't think Forscan is capable of that. I know there are a few things like power balance that were never developed for the 6.0 in Forscan. Thanks for watching. Please support the channel by subscribing.

@Gendreau113 Год назад

I know for newer trucks FORscan can calibrate larger fuel tank sizes. Hard to find info on whether it can on a 6.0L though

@ElJuanmaTVgaming Год назад

Hello! Can someone please help me getting the HEX number for my 37 inch tires?

@allensshenanigans348 Год назад

I believe the programming only allows as low as 600 revs per mile, which converts to hex of 5800. I am running 35 inch tires and I am using 606 revs per mile. My speedometer is right on with my GPS on my phone. Save your original settings before you change anything. Follow the directions in the video, but try 5800. Let me know how it works for you.

@ElJuanmaTVgaming Год назад

@@allensshenanigans348 5800 worked!!! I only see a little difference past 65 mph. It’s great now! THANKS for the video!

@DillonLentz-q3o 10 месяцев назад

What is the formula to convert revs/mile to Decimal?

@allensshenanigans348 10 месяцев назад

I don't know if there is a formula to convert it directly. I just found a pattern after plugging in different revs.

@OverlandNV 3 года назад

Thx for this. How is your speedometer running 70MPH using 606?

@allensshenanigans348 3 года назад

@OverlandNV It is matched up really close to the GPS at all speeds. Thanks for watching!

@OverlandNV 3 года назад

@@allensshenanigans348 Awesome. I have 35.1" so I suspect thats right were I wanna be.

@willcsandberg5171 2 года назад

needs editing, way too long just get to the point of the title

@allensshenanigans348 2 года назад

Thanks for your critique. I try to leave it up to the audience to be able to skip through steps if necessary. Some people are new to this and need more detailed steps. Please support the channel by subscribing!

@RT-ph2fd 2 года назад

Hey whats the Hex for rev/mile 560 i have 37x12.50R20

@allensshenanigans348 2 года назад

I believe the abs module doesn't recognize anything below 600. Thanks for watching. Please support the channel by subscribing.

@bignate06nrk Год назад

I have 35’s and it will not allow me to put below 600. So I just set it to 600 and it’s closer than it was.

@Lone3192 Год назад

Link to your spreadsheet?

@allensshenanigans348 Год назад

Sorry I don't have it available right now.

@chrisn.4136 2 года назад

I did everything you described in the video. Everything saved just like the video but nothing changed at the speedometer.

@allensshenanigans348 2 года назад

Did you go back in the module and check that the changes were saved? What revs per mile are you trying to change to?

@chrisn.4136 2 года назад

@@allensshenanigans348 yes. That’s the confusing part. 607 rpm, 5F00

@allensshenanigans348 2 года назад

@@chrisn.4136 Make sure you change the numbers in both of the spots I mentioned in the video.

@chrisn.4136 2 года назад

@@allensshenanigans348 I did. I followed your video to the T. Can’t figure out why it had no effect on the speedo. 607 shows updated in both modules. This truck is been a lemon from the day I bought it so nothing really surprises me anymore.

@allensshenanigans348 2 года назад

@@chrisn.4136 Just keep playing with it, you'll figure it out. I would check the module to see what differential is in it and make sure it matches the gear ratio of the rear end. Then keep changing the revs until you see a change . Thanks for watching! Please support the channel by subscribing!