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Stupid question... Are we 100% sure that there's no way for Ford to fix this in a software update sometime in the future? Like is this really burned-in somewhere in hardware that can't ever be updated via software?
I asked S&B customer service but couldn't quite get a positive answer... if the tank size value in forscan was previously changed (prior to installing the module, for example), does it need to be changed back to its original value to correctly calculate?
Based on the video above, yes if you changed it in Forscan, you need to change it back. It looks like S&B wrote a simple algorithm that uses the stock size of the tank to figure the new DTE with the S&B tank. So, if you have changed the size of the tank with Forscan, that algorithm will not math out because it is using the wrong base number... The good thing about this is that if you have to get your truck flashed or worked on, it won't reset anything because you leave the factory settings in place. Their module does all the recalculations.
Originally Posted by ds53652
Stupid question... Are we 100% sure that there's no way for Ford to fix this in a software update sometime in the future? Like is this really burned-in somewhere in hardware that can't ever be updated via software?
I wouldn't hold your breath. Ford is not going to give us the ability to change these things on our own.
Based on the video above, yes if you changed it in Forscan, you need to change it back. It looks like S&B wrote a simple algorithm that uses the stock size of the tank to figure the new DTE with the S&B tank. So, if you have changed the size of the tank with Forscan, that algorithm will not math out because it is using the wrong base number...
If your assumption is accurate, those of us that have a 55 gallon tank could cheat the tank size with Forscan to achieve a little closer DTE. If we reduce the size of the tank with Forscan to 31.25 gallons, and then apply the 1.76 factor from the S&B module you'd effectively calculate a 55 gallon tank sized DTE. This assumes the S&B module is using the same tank size value that Forscan has the ability to update.
I know, I hear ya. But this used to work with no issue. In the past, you changed it in Forscan and the DTE worked as expected. It worked from 2011 to 2022, if I'm not mistaken. I bet this was more of an "oops" by Ford, rather than a targeted effort to no longer allow us to get accurate DTEs with upgraded/larger tanks. Hell, they still allow us to change tire size via Forscan...which has direct impact on our odometers.
I just wish someone knew how or why this no longer works. Because if it's something that can be fixed via a software update, I see no reason why Ford wouldn't enable it again if its customer base b*tched enough. But you're right, I'm definitely not going to hold my breath, lol.
Originally Posted by chadstickpoindexter
I wouldn't hold your breath. Ford is not going to give us the ability to change these things on our own.
I know, I hear ya. But this used to work with no issue. In the past, you changed it in Forscan and the DTE worked as expected. It worked from 2011 to 2022, if I'm not mistaken. I bet this was more of an "oops" by Ford, rather than a targeted effort to no longer allow us to get accurate DTEs with upgraded/larger tanks. Hell, they still allow us to change tire size via Forscan...which has direct impact on our odometers.
I just wish someone knew how or why this no longer works. Because if it's something that can be fixed via a software update, I see no reason why Ford wouldn't enable it again if its customer base b*tched enough. But you're right, I'm definitely not going to hold my breath, lol.
I still doubt it. Forscan is not an approved program from Ford, we just get lucky that it works, and there is still a lot of limitations with what we can even do with Forscan. And that is getting less and less each year... If it were up to them we wouldn't be able to change anything without going to them and paying to have things unlocked... however, I would still bet that something's won't be able to be unlocked because it's better for them if you just pay to get to that trim level.
If your assumption is accurate, those of us that have a 55 gallon tank could cheat the tank size with Forscan to achieve a little closer DTE. If we reduce the size of the tank with Forscan to 31.25 gallons, and then apply the 1.76 factor from the S&B module you'd effectively calculate a 55 gallon tank sized DTE. This assumes the S&B module is using the same tank size value that Forscan has the ability to update.
Anyone willing to be a guinea pig and try it...?
I do not believe this would work since on a 23+ the actual values entered into Forscan are not used, but rather only the factory tank sizes. The custom value reverts to the closest factory tank size.
I asked S&B customer service but couldn't quite get a positive answer... if the tank size value in forscan was previously changed (prior to installing the module, for example), does it need to be changed back to its original value to correctly calculate?
When I was exchanging emails with Martin @ S&B and asked him if I could just leave the changes I made with Forscan intact, as they did not seem to impact anything, his response was:
” I understand your questions about the Forscan now, you want to revert the Fuel Tank Capacity changes to stock.”
Stupid question... Are we 100% sure that there's no way for Ford to fix this in a software update sometime in the future? Like is this really burned-in somewhere in hardware that can't ever be updated via software?
Yes we are sure. Short of not having access to the firmware that is now encrypted, this is the solution. I was in contact with some Upfitters and this is basically what they are doing as well, connecting a device to the Gateway Module that allows them to get the same result. I was also led to believe that Ford also sells a programmable module that is only available to Upfitters and Fleet customers that among other things, allows them to program the fuel tank size to whatever their modified fuel capacity is. The S&B solution is by far a whole lot more affordable.
Stupid question... Are we 100% sure that there's no way for Ford to fix this in a software update sometime in the future? Like is this really burned-in somewhere in hardware that can't ever be updated via software?
To answer your question, sort of a way.
My dealer says they can reflash my long bed 48 gallon to 66 gallons cuz that is the next factory setting, that would be close enough on a 68 gallon.
With that being said, I've had a 68 gallon in my shopping cart since before Christmas. I'm just not ready to completely depart with $5,000 for my other accessories that I'll do when I have it on the lift.
Saying they can do it versus actual i have not tried.
My dealer says they can reflash my long bed 48 gallon to 66 gallons cuz that is the next factory setting, that would be close enough on a 68 gallon.
With that being said, I've had a 68 gallon in my shopping cart since before Christmas. I'm just not ready to completely depart with $5,000 for my other accessories that I'll do when I have it on the lift.
Saying they can do it versus actual i have not tried.
Absolutely the dealership can reflash your truck and switch between the different fuel tank sizes. Will they is another question. Many of them won't, but you can find some here and there that may. I would think that if you wanted to dish out the money for FDRS I would think you can make these changes on your own. But it's not cheap...
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