AlphaOBD and DTE correction for 51 gal Tank Mod

[ram5thwheel]

I have been checking all the AlphaOBD threads but I can't recall any detailed information on changing the DTE gallon preset.
I plan on changing my OEM tank to a Titan underbelly replacement tank. I would then need to change the DTE preset value to match the new tank size. Looking for help or a video on performing this change if anyone knows of one.

Thanks
ram5thwheel

 

[WY-Dave]

Here something I seen, not sure how pertinent it is
https://docs.google.com/document/d/1ztH3blx3NvqztK1HWVSLiY3QwAHw2vEu/edit

All of what Chris has
https://drive.google.com/drive/folders/1xQvdHVTgRwKQRKSBh1K2rkCqg5dlpSi0

 

[DOT]

I have been checking all the AlphaOBD threads but I can't recall any detailed information on changing the DTE gallon preset.
I plan on changing my OEM tank to a Titan underbelly replacement tank. I would then need to change the DTE preset value to match the new tank size. Looking for help or a video on performing this change if anyone knows of one.

Thanks
ram5thwheel

Did this work for you? I’m looking at doing the same upgrade on my 2018 2500


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[ram5thwheel]

Did this work for you? I’m looking at doing the same upgrade on my 2018 2500


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DOT,

I have not taken any action as of yet. Consequently, I have held off with the purchase and installation of the extended capacity tank.

Have not received an input from other sources whether this works or not. I might just plug into my BCM the value for the replacement tank and run for a while to see how the DTE calculation performs. I can always restore it back to its original value.

Will post any results if and when I take a shot at it.

 

[DOT]

DOT,

I have not taken any action as of yet. Consequently, I have held off with the purchase and installation of the extended capacity tank.

Have not received an input from other sources whether this works or not. I might just plug into my BCM the value for the replacement tank and run for a while to see how the DTE calculation performs. I can always restore it back to its original value.

Will post any results if and when I take a shot at it.

Got it. Will do the same if I give it a go


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[mtnrider]

Did this work for you? I’m looking at doing the same upgrade on my 2018 2500


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I have seen many threads on this across other boards but don't think anyone has been successful yet?

Pretty sure if you go to a larger tank you will just have to live with it being "off"


.

 

[ram5thwheel]

I have seen many threads on this across other boards but don't think anyone has been successful yet?

Pretty sure if you go to a larger tank you will just have to live with it being "off"


.

mtnrider,

That is unfortunate if true. I know that with a Ford, they send a programmer with the tank with specific instructions on how to make the change and then you send the programmer back. When I spoke with the manufacturer, they were still working on the RAM but that was this past summer.

Post any updates if anyone tries this change. Thanks!

 

[RedSRT4Me]

When you get the new tank you connect to alfaobd and change the tank size. Crappy part is its in liters. Luckily the conversion is
1 gallon = 3.7854 liters.

3.7854×26 = 98.4L

55 gallon tank would be:
3.7854x55 = 208.2L

Once you flash the new tank size the truck will Calc the rest for you such as DTE etc.

 

[DOT]

When you get the new tank you connect to alfaobd and change the tank size. Crappy part is its in liters. Luckily the conversion is
1 gallon = 3.7854 liters.

3.7854×26 = 98.4L

55 gallon tank would be:
3.7854x55 = 208.2L

Once you flash the new tank size the truck will Calc the rest for you such as DTE etc.

Thanks. There also seems to be a tank size flash option in my EZ Lynk. Going to do the tank install once I get closer to “E”.


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[ram5thwheel]

When you get the new tank you connect to alfaobd and change the tank size. Crappy part is its in liters. Luckily the conversion is
1 gallon = 3.7854 liters.

3.7854×26 = 98.4L

55 gallon tank would be:
3.7854x55 = 208.2L

Once you flash the new tank size the truck will Calc the rest for you such as DTE etc.

In looking at the tank size option, you have a range from 32-290 L. (This according to my truck). Current value entered is 117.000 Liters which correlates to 30.9081 Gallons US.

In looking at the S&B replacement tank, supposed capacity is 52 Gallons US. That converts to 196.8414 Liters which is the value that I would enter for the new DTE calculation.

This is what I might try short of purchasing and installing a new tank just in case.