S&B Tank Installed how to get fuel gauge to read

[combat grunt]

Hello,
I installed a S&B 55Gal Tank on my 2022 Ram 2500. I was able to get the fuel tank size reset but the fuel gauge is not working or the DTE as is should. For example it shows I have 1,000miles remaining I have already went 400 I do average 18-20mpg (HWY) most of my driving so the math still don't add up. Has anyone adjusted any other setting to show the gauge correctly? I figure every 13ish Gallons I should move a QTR Tank on the gauge. At this point I'm still showing over full and have the setting for fuel tank size set at 50gallons in size or 189L (DTE did adjust up), I tried adjusting it to 208 DTE moved up but did a test gauge only moved off full just barely at 500miles.

 

[PurpleRT]

Hdrams.com would be your best bet for help

Here’s my $.2 from my understanding, the float on the pump is what determines the fuel level, the distance left to empty is gonna be more of a software issue unless you can use something like Afla obd to change the fuel tank size to 55 gallon or whatever that is in Liters which may not be possible if the heavy duties didn’t have a 55 gallon tank as an option from the factory.