Question On The Titan XXL Install - Ford F150 Diesel Forum
 
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post #1 of 6 (permalink) Old 03-22-2020, 07:43 PM Thread Starter
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Question On The Titan XXL Install

Hi All!

Just finished up my tank install the other day and flashed in the tank and the eTBM while I was there. Other than the distance units reverting to km, the FORScan update went pretty smooth. My question for those that have done this install is how long does it take the DTE to recalculate the tank range? When I first adjusted the code in FORScan after filling the tank, the DTE showed "875 mi to E" (full tank). Today, I took the truck up the road to my daughter's place, 60 miles away. On the drive up, the DTE fell off at a rather accelerated rate, roughly double the miles driven. Within seconds of hitting "799 mi to E," it reset to 850. On the ride home, it reset to 870 at about the same indication as the first reset. It reset one last time about 5 miles from home to "901 mi to E." I should mention the the gauge is still on full and the total distance is about 130 miles driven since the code update. Currently the "Average Economy" gauge (aka The Lie-O-Meter) is showing 23 mpg and the Trip 1 summary shows the economy at 22.8 mpg over 400 miles on the run. Just curious when I should expect this to settle down and get reasonably accurate.

"The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale and pays the freight both ways."

President John F. Kennedy

2018 Lariat FX4, 6.5, Triple Black, 502A, 3.55, Canadian Refugee
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eTBM, Titan XXL 48.......
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post #2 of 6 (permalink) Old 03-23-2020, 06:05 AM
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The same thing went on in my truck when the 40 gal. tank was installed, I would be driving after my fill up and the DTE would increase 100 miles or more. I just watch my fuel gage and did not relay on the DTE and filled the truck when fuel le vel wasat of a tank to go. I had my tank installed last October 2019 and I made one long trip with the truck 1500 miles round trip plus whatever local miles I put while I was there for a few weeks. At this time, I believe the DTE is correct. I do not have any more functionating with the DTE moving up and down. A few tanks of fuel is all it takes. I have never ran the tank down to show only 100 miles to go to empty.
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post #3 of 6 (permalink) Old 03-23-2020, 07:46 AM Thread Starter
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Thanks for the info justlucky. I see in the photo that yours gives 955 DTE. Will it actually show greater than 1k? I guess in the end I spent all this money to see greater than 1100 mi to E! Well, that and hopefully the ability to tow my boat 500 mi on a tankful.

"The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale and pays the freight both ways."

President John F. Kennedy

2018 Lariat FX4, 6.5, Triple Black, 502A, 3.55, Canadian Refugee
Adds.....
eTBM, Titan XXL 48.......
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post #4 of 6 (permalink) Old 03-23-2020, 08:29 AM
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@PercheNoir - here are my DTE experiences with my 40 gallon Titan XXL install:
  • DTE for first tank full of fuel after getting your 48 gallon Titan XXL tank installed will definitely be off, as it doesn't matter whether you make the FORScan change before or after
  • DTE will start working better on your 2nd tank and will "zero in" on subsequent refills, as the computer relearns DTE
  • Fuel gauge in IPC will linger near 100% full longer than it used to, but you will need to use this gauge near empty (still accurate because uses a float assembly) until DTE zeroes in
  • DTE gauge only uses 3 digits (999) when displaying miles but uses 4 digits (9999) when displaying kM (see comments from @kdjasper in master thread)
  • All of your questions have been answered in this master thread: Titan fuel tank on 5.5 short box powerstroke
Enjoy your new 48 gallon Titan XXL tank!

2018 Ford 150 PS Diesel Platinum FX4 in Ingot Silver w/BuiltRight Rear Seat Release, Gatorback F150 Splash Guards, Lloyd Custom F150 Luxe Carpet Mats & Titan 40 gal replacement fuel tank
FORScan mods: Auto Start/Stop Disabled, Bambi mode, Digital Temps Above Gauges, DPF Full %, OCR (Operator Commanded Regen) and Heated & Cooled seats on Home screen
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post #5 of 6 (permalink) Old 03-23-2020, 06:19 PM
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The pump shut off at 25 gal, before the tank was filled, it may have taken more
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post #6 of 6 (permalink) Old Yesterday, 11:38 PM
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It will take a few tanks for the DTE to calibrate.

2018 Ford F-150 King Ranch 3.0L Power Stroke 4x4 | Icon 2.5 Front & 2.0 Rear, Toyo AT II 295/60R20, 3" ProComp Rear Block, S&B Dry CAI, LineX & BakFlip MX4, BuiltRight Seat Release | ForScan Mods: Disable Double Honk, 2x Panic, DPF Full %, Digital Temps Above Gauges, A.S.S Disabled
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