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Old 11-09-2019, 03:20 PM   #1
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THOR #16597
2019 E450 speedometer calibration

After installing the 235/85/16 tires on my 2019 Outlaw I started looking into replacing the gear on my speedometer and found out it is all electronic now. Apparently, an electronic calibrator is necessary but I have not been able to find one for the 2019 E450. My local Ford dealer told me they could not help me. Does anyone know why this is not available? I know that I can just stay 5mph under the speed limit, but I also know that it affects my odometer, shift points, and efficiency of the power band so I would like to find a way to make it right.
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Old 11-09-2019, 03:29 PM   #2
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Almost any 'tuner' shop can do it for you in just two or three minutes.
They have the computer to rewrite your computer.
Call a 'hotrod' shop.
But
I'd ask the tire place that did the mounting for you before I called anyone else. It's logical they would know someone to do this for you.
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Old 11-09-2019, 09:04 PM   #3
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For $400 you can do it yourself and a ton more if you're interested. If you do go the HPTuners route, I can give you the calibration changes needed for that tire size so your speedo will be dead on accurate.

If you're ever up in the SF Bay Area, I could do it for you. I wouldn't be free but it would be way less than $400. (The license fee for me to edit your ECM is $100, that goes straight to HPTuners.)

This is the hardware and software...

https://www.hptuners.com/mpvi2/#custom_form_mpvi2
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Old 11-10-2019, 05:29 AM   #4
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Thank you for your suggestion. I would love to do it myself but I don't really need something as comprehensive as your HPtuner. Is there a reason that speedometer calibrators show up for the F450 and not the E450? Do you think a speedometer calibrator for a 2019 F450 will work on the E450 also? This one is $150 https://www.rockymountainsusp.com/ac.../90015-hk.html
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Old 11-10-2019, 03:01 PM   #5
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Actually, the 2019 E series is not on the supported vehicle list for the HPtuner either!
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Old 11-10-2019, 04:09 PM   #6
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THOR #13932
F450 has a different transmission than an E450.
An E450 cannot be manually shifted up or down through the gear range.
An F450 allows you to select any specific gear up or down.

The transmissions are not, per a respected member here on the forum, more than close cousins. I asked about trans control earlier this year and he responded with the only reasonable answer I've seen on-line anywhere.

Call a tuner or 4x4 shop as suggested.
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Old 11-10-2019, 05:08 PM   #7
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Quote:
Originally Posted by Handy View Post
Thank you for your suggestion. I would love to do it myself but I don't really need something as comprehensive as your HPtuner. Is there a reason that speedometer calibrators show up for the F450 and not the E450? Do you think a speedometer calibrator for a 2019 F450 will work on the E450 also? This one is $150 https://www.rockymountainsusp.com/ac.../90015-hk.html
I looked at that and I'm not a fan. I don't like anything that's going to connect inline between modules on the data line. You have to take apart your dash and get to the back of the cluster to plug it in. And since it's going into the cluster, I seriously doubt it's going to work with the E450 dash since it's totally different than the trucks.

On a lot of this stuff you simply get what you pay for. Even at $150, it's not that great of a solution even for the trucks it's intended for. I'm doubtful it's actually doing this either...

Quote:
updates your vehicle’s ECM to ensure accurate shift points and proper electronic stability control.
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Old 11-10-2019, 05:24 PM   #8
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Quote:
Originally Posted by Handy View Post
Actually, the 2019 E series is not on the supported vehicle list for the HPtuner either!
I can't guarantee it obviously but I'm betting it will work fine on your chassis. They haven't changed much on the '16-up E350's- E450's and I know it works fine on the 2017 and 2018 builds. If you get it and it isn't supported, most likely all you'd have to do is email them your VIN and OS numbers and they'd be able to add support for it since the main OS is probably one they already support.

There is another factor with spending the money the right way first instead of trying to save a buck... If you bought the $150 thing or something similar, when you're done with it or if it doesn't work, it's pretty much useless. If you buy the HPTuners hardware, it will always be worth money. There are always guys out there looking to buy them used to save a few bucks. Here's a way you can calibrate your speedo properly AND even do some tune changes for pretty cheap...

Spend the $400 on HPTuners. Calibrate your speedo and anything else you want to do. Then put the HPTuners hardware up for sale and you'd probably get an easy $200, maybe even $250 back out of it. ($100 of the initial $400 is for the license to be able to edit your particular vehicle. So the hardware without any tune licenses is actually $300.) Total cost would end up being $150 or $200. Personally I'd just figure the $400 was part of the price of getting tires that won't leave you stranded with constant blowouts and just keep the HPTuners hardware for when you need to diagnose any engine or trans issues down the road.

BTW you did the right thing by changing those tires. That was a VERY smart move and it will definitely save you from blowouts on the junk undersized stock tires.

Also BTW, I get absolutely NOTHING from trying to "sell" HPTuners hardware. lol. I'm simply trying to help you solve your problem without you having to kick yourself by wasting time or money in the wrong direction.

And ANOTHER BTW, there is a totally free way to "fix" your problem too. You can make the speedo itself read properly by simply moving the needle. The needles pull off with steady, even pressure and can be moved and pushed gently back on without issues. Obviously the downside to that is it does nothing for your odometer or ECM being off a little. Bang for the buck, it's a totally acceptable solution though.
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Old 11-10-2019, 09:41 PM   #9
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Thank you! With all the internet info available it is surprising that this info is not more readily available.
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Old 11-11-2019, 08:15 PM   #10
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Quote:
Originally Posted by Handy View Post
Thank you! With all the internet info available it is surprising that this info is not more readily available.
Most of what I say or do isn't common internet knowledge. lol. I try to put as much valuable information out there as I can, but it takes me awhile to get from one end of the internet to the other.
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Old 11-12-2019, 07:11 PM   #11
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Low tech/Low Buck fix- I made the same tire change and my speedo's off ~5%, so I use the Garmin navigator's speed indicator. If you don't have or want one, I've seen GPS Speedos on Amazon but haven't gone that route:
https://smile.amazon.com/s?k=gps+spe...b_sb_ss_i_1_10
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Old 11-12-2019, 07:30 PM   #12
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There's also I-Phone and Android Speedometer apps that give very accurate readings
So at least you'll know that when your rig speedo shows 65mph, you're actually going 69mph
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Old Yesterday, 03:17 PM   #13
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Conclusion

After reading all your comments, emailing 3 manufacturers of programming devices, and speaking with The Speedo Shop in Santee, I have concluded that the computer in the 2019 E450 must be reprogrammed to make the proper comprehensive adjustments for the larger tires. Unfortunately due to the newness of this vehicle, there are no devices that can do this other than the Ford dealer which is prohibited from doing it. In time there should be aftermarket devices available. The tire size increase is 8.2% and I was advised that a change over 10% can cause issues but that 8.2% should be manageable.
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Old Yesterday, 03:46 PM   #14
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THOR #13932
Has the op checked his new tires with a GPS?
That 8.2% would make my inaccurate unaltered speedo, correct.
Mine is considerably off from the factory.
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Old Yesterday, 03:57 PM   #15
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No, but I will tomorrow when I go to the alignment shop. Good point, it will be interesting to see where I actually stand.
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Old Yesterday, 05:26 PM   #16
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Take a drive up to the SF Bay Area and I'll do it. You could even send me your ECM and I'll program it and send it back.

Seriously.

If for some reason I can't program it, I'll move your needle so at least your speedo is accurate. My cluster was reading about 3mph different than the input into the ECM anyway and even after getting the input/ECM calibration correct for the tires, I needed to also move the needle so it's dead on.

You have the input into the ECM that it and the trans relies on, but you also have the analog conversion into the needle reading that often is off.
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