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Edit: I've added the Excel file (http://www.cleanmpg.com/forums/downloads.php?do=file&id=35) to the files section.

So I've been inspired by Larry to start weighing my pips (kinda hard to get on the scale). Anyway I've weighed the first 4 pips and see a pattern emerging.

Pip Hypothetical Weight
Pip Number|Weight (L)|Weight (gal)|Weight (oz)
1st|15.50|4.09|524
2nd|2.00|0.53|68
3rd|2.00|0.53|68
4th|2.25|0.59|76
5th|2.75|0.73|93
6th|3.25|0.86|110
7th|4.25|1.12|144
8th|3.00|0.79|101
9th|3.50|0.92|118
flashing|2.50|0.66|85
starve|6.00|1.59|203


Pip Empirical Measurements
Pip Number|Weight (L)|Weight (gal)|Weight (oz)
1st|15.41|4.07|521
2nd|2.09|0.55|71
3rd|1.93|0.51|65
4th|2.23|0.59|76
5th|2.74|0.72|93
6th|3.24|0.86|110
7th|4.15|1.10|140
8th|2.95|0.78|100
9th|3.67|0.97|124
flashing|2.47|0.65|84
fillup|6.06|1.60|205


This is all working towards a 47 Liter / 12.4 gallon / 1587 oz tank. The 12.4 is based on the most I've heard of Larry stuffing in a tank. The stuffing is only taken into account in the weight of the first pip. Everything else should be the same whether or not you stuff the tank.

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I am clearly lost.... ;)

Dan there are ten pips. You seem to have left out the solid 10th pip. Maybe I am reading it wrong.

Consider the starting point all 10 pips. "1st pip" is how much gas is gone when the first pip falls. "2nd pip" is how much gas is burned between in the time between the first pip falling and the second pip falling. So I'm counting falling pips so to speak.

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5th pip dropped today and it was a heavy one.

2.807 L or 0.742 gallons.

I may have to do this over a few tanks to normalize the trend.

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Another 0.726 gallons into my tank and the 6th pip fell. My spread sheet is telling me that the 5th pip fell when I was 4.980 gallons into my tank, and the 6th pip fell when I was 5.760 gallons into my tank, so the 6th pip has a "weight" of 0.726 gallons.

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Is is correct to suppose that Prius bladder refill variation is all expressed in the miles one gets from the top pip? I always suspected that but never did meaningful testing.

DAS

Is is correct to suppose that Prius bladder refill variation is all expressed in the miles one gets from the top pip? I always suspected that but never did meaningful testing.Yes, that is my thinking exactly. I'm now tracking when each pip falls. When it does, I record the FCD tank miles and the FCD tank MPG at the time it fell. Excel then tells me how far (in gallons) I am into the tank at the time of the falling pip.

I suspect over 5-10 tanks worth of data that the trend will be pretty consistent.

Laborious, but its another thing to fiddle with on my daily commute.

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Dan,
I've been keeping up with my pip drops if that data would help any....only on this tank though.

If your right about the .72 gallons per pip i'll probably fall this tank in the 940 mile range :( :(

This may throw a wrench into things but, I got 12.4 gallons in my last 1K+ tank when I filled. Wayne Mitchell(FireEngineer) told me today he has heard of as much as 13 gallons going into a Prius bladder/tank. I've heard of the trick of driving the left rear tire onto a piece of 2X4. Hmm.;)

I've heard of the trick of driving the left rear tire onto a piece of 2X4. Hmm.;)

I'll try it next tank :)

Dan,
I've been keeping up with my pip drops if that data would help any....only on this tank though.

If your right about the .72 gallons per pip i'll probably fall this tank in the 940 mile range :( :(Yes, I'd like as much pip data as I could get. What I need is the Tank Miles and Tank MPG (from the Prius FCD) at the time of each falling pip. From that I can determine how many gallons were burned while the PIP was displayed.

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Yes, I'd like as much pip data as I could get. What I need is the Tank Miles and Tank MPG (from the Prius FCD) at the time of each falling pip. From that I can determine how many gallons were burned while the PIP was displayed.

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Dan, I'll try to remember to record that as the pips fall. It may be a few days before I lose the first one since I just filled today.:p:D

1st Pip left @ 272 miles- 76.2 MPG
2nd Pip left @ 316 miles - 77.5 MPG
3rd Pip left @ 363 miles - 78.6 MPG
4th pip departed @ 420 miles - 80.0 MPG

Pips 1 and 2 i'm positive about the mileage and MPG
3rd Pip fell and I didn't see it near immediately like normal. I know it was between 360 and 364. MPG should be right for this Pip.

Thanks for all your work with Prius technical stuff. Without your gauges and info such as this I'd be hopeless.

BTW I'm gonna give this 1K tank my best possible. I plan to run the prius out of gas if I have to. That Pip and mileage @ 0 fuel should be interesting.

I'm @ 79.1 MPG after 379.1 miles. (7 of 10 pips available) I'm gaining around .75-1.25 MPG a day.
You guys think I have a shot?

Y3es, I think you have a chance, but you will need to bring it up to 82 or 83 MPG minimum and it will depend on how full you were at your last fill-up.

I'm up to 80. :woot:
Notice the mileage difference between trip odo and FCD.

http://i79.photobucket.com/albums/j127/forbessw/DSCN2023.jpg


http://i79.photobucket.com/albums/j127/forbessw/DSCN2025.jpg

Guys,
I was looking at post #1. So with the flashing pip starts you have 2.5 gallons and then it say's starve.
So am i to assume that the flashing pip goes away and there is nothing there?
and then you still have 2.1 gallons? I know there is some unknowns here.

I"m averaging 50 miles to the pip after the 1st one.
So if this trend continues i'll get a flashing pip @ ~872 miles.
If its truly 2.5 gallons (based on my current 80 MPG) that would be another 200 miles when it stops flashing.

872 + 200 = 1072 miles

Then an additional 2.1 gallons in theory? If I just hold my current mpg of 80 that another 168 miles.

1246 miles @ zero fuel.

Guys,
I was looking at post #1. So with the flashing pip starts you have 2.5 gallons and then it say's starve.
So am i to assume that the flashing pip goes away and there is nothing there?
and then you still have 2.1 gallons? I know there is some unknowns here.Basically you get a flashing PIP until you run out of gas. Then you get a red triangle and the ICE shuts off. If you have enough SOC you got about a mile to find a service station.

I'm basing the 2.5 gal at flashing on Larry's KiloTank. He flashed at 820 but still made it to 1000. My math puts it at over 2 gallons. But the CAN traffic says you have about 1.5 gallons at flashing pip. If you want to watch wat the CAN traffic thinks your fill level is, plug in the new XGauges and you get a "gas" gauge that tells you the % full your tank is (0-100%).

11011011

PS. Pip flashes at between 12.5% and 15%

Basically you get a flashing PIP until you run out of gas. Then you get a red triangle and the ICE shuts off. If you have enough SOC you got about a mile to find a service station.

I'm basing the 2.5 gal at flashing on Larry's KiloTank. He flashed at 820 but still made it to 1000. My math puts it at over 2 gallons. But the CAN traffic says you have about 1.5 gallons at flashing pip. If you want to watch wat the CAN traffic thinks your fill level is, plug in the new XGauges and you get a "gas" gauge that tells you the % full your tank is (0-100%).

11011011

PS. Pip flashes at between 12.5% and 15%

thanks!
This is going to be very close then.
I guess i'm gonna have to put my Scangauge back in the Prius.

Dan,
Lost another pip on my way to lunch.

1st Pip left @ 272 miles- 76.2 MPG
2nd Pip left @ 316 miles - 77.5 MPG
3rd Pip left @ 363 miles - 78.6 MPG
4th pip departed @ 420 miles - 80.0 MPG
5th pip @ 483 miles - 81.1 MPG

Basically you get a flashing PIP until you run out of gas. Then you get a red triangle and the ICE shuts off. If you have enough SOC you got about a mile to find a service station.

I'm basing the 2.5 gal at flashing on Larry's KiloTank. He flashed at 820 but still made it to 1000. My math puts it at over 2 gallons. But the CAN traffic says you have about 1.5 gallons at flashing pip. If you want to watch wat the CAN traffic thinks your fill level is, plug in the new XGauges and you get a "gas" gauge that tells you the % full your tank is (0-100%).

11011011

PS. Pip flashes at between 12.5% and 15%
Dan, the pip started flashing at 892 miles and I went to 1052.8(FCD) and took 12.4 gallons. I'm guessing that will make a significant difference in the calculations. You are doing some awesome work here and I can't wait to see it when it's finished.

Larry,
Did you run it out of gas that time? I imagine you were very close if you filled with 12.4 gallons.

I"m starting to have my doubts about this tank for me.

Larry,
Did you run it out of gas that time? I imagine you were very close if you filled with 12.4 gallons.

I"m starting to have my doubts about this tank for me.
No, I made it in on my own power. I heard over the weekend that as much as 13.0 gallons have been reported to have been pumped into a Prius. I think it was at fuel-starve though.

I should reach fuel starve in 5-6 days :)

My observations of CAN id 0x244 in relation to the gas gauge....

The pips fall whenever the "gas" XGauge (0x244) crosses a certain threshold. That threshold has to be held for some period of time before it's committed to the PIP display. For example, I was driving along at 15% (0x06 on 0x244 byte 8). I dipped down to 12.5% (0x05 on 0x244 byte 8) for a few seconds then it bounced back to 15%. The next day it stayed at 12.5% for about 30 seconds and I got the "Add Fuel" message. I suspect it latches at 30 seconds or a minute. Now resurrecting a pip has happened, but never to me. I suspect the "latch" timing is much longer. Something like 30 seconds to latch on the way down, but 5 minutes to latch on the way up.

So basically, if the CAN id 0x244 drops to 0x05 (12.5%) for 30 seconds, you go from solid pip to flashing pip. I theorize that if your car got sufficiently tilted for say 5 minutes and CAN id 0x244 continually registered 0x06 or 0x07 then you would get that last pip back eventually.

Now the XGauge "gas" gauge does bounce around a lot. As much as 5% on any trip depending on terrain, but watching it gives you complete transparency as to how the PIP display is being derived.

PS... Larry do you recall what the FCD MPG was at flashing pip and what it was at fillup? Basically what I need are two pip points where each pip point has FCD MPG and FCD miles. From those four figures I can weigh a pip.

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PS... Larry do you recall what the FCD MPG was at flashing pip and what it was at fillup? Basically what I need are two pip points where each pip point has FCD MPG and FCD miles. From those four figures I can weigh a pip.

11011011
Unfortunately, I don't have exact numbers for the FCD MPG for those points. When the last pip started flashing the FCD would have been in excess of 87 mpg. At fillup, it was 88.? but I'm thinking it may have been 88.3 but not sure. I'll keep a closer watch on this tank.:o

Dan,
Would you prefer the pip data as they fall or just when we finish a tank send it all to you?
I would assume a tank at a time.
PM or post it here?

How much data you going to gather before you start posting results?

Here's the averages between myself and AG.

PIP|Gallons|Liters|Standard Deviation %
1st pip|3.090|11.70|21.96%
2nd pip|0.553|2.09|11.63%
3rd pip|0.511|1.93|8.29%
4th pip|0.590|2.23|9.97%
5th pip|0.724|2.74|3.52%

Soon I will post this as an excel file in the "files" section. I got no problem with people simply posting the values to this thread. If you want, just put your tank in one post and edit the post as the pips fall. That's what I'll do. It is interesting that pip 5 is definately showing up as heavy. We both showed it as a heavy pip and the std. dev. is relatively small.

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Interesting how the standard dev is dropping as the tank gets further along. I guess from different fill levels?

I have a long drive tomorrow should lose 2 more pips.

btw...Hooked my Sgii back up in the prius gas xgauge is working...its showing a value of 55.0. I guess thats out of 100?

I expect the variance on the first pip to be huge since it's a matter of how well you stuff the tank. As suggested earlier, I think that most Prius will have the same amount of gas in the tank once 9 pips are showing. It will be interesting as more data falls in place.

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Unfortunately, I don't have exact numbers for the FCD MPG for those points. When the last pip started flashing the FCD would have been in excess of 87 mpg. At fillup, it was 88.? but I'm thinking it may have been 88.3 but not sure. I'll keep a closer watch on this tank.:oPS. Pip flashes at between 12.5% and 15%So based on the CAN traffic of a flashing pip at something between 12.5% fill and 15% fill, and assuming 11.9 gallon capacity, CAN thinks the pip flashes when 1.64 gallons are left. Based on Larry's data, you can squeeze at least 1.60 gallons from the bladder once it starts to flash. So I think assuming 1.50 to 1.75 gallons is probably pretty close.

I here by decree, that you got at least 1.60 gallons in the tank when the pip flashes.

11011011

I've added the Excel file (http://www.cleanmpg.com/forums/downloads.php?do=file&id=35) to the files section.

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6th pip fell @ 568 miles 81.8 MPG scangauge "gas" gauge was 45.0

Dan,

I'll start posting my data - just started a new tank yesterday. My first pip will likely be a little short, as I usually only fill until the nozzle auto-clicks off.

Just downloaded excel file
My 6th pip was very heavy. .988 gallons!

Dan,
these latest Xgauges rule!

I nominate you for a distinguished service award for you awesome work with the Scangauge!!!!

btw,
its interesting to see the wide gap in warp stealth. I noticed today that with a gps of 10 it would pull power off my pack and a gps of 3 would start regenerative braking.
I've always suspected that a "sweet spot" on the pedal existed because you could move the pedal so much and stay in WS. I just keep it on 5.0 during my glides and I seemed to keep my SOC higher

7th pip fell @ 645 miles, 82.0 MPG "gas"xgauge=32.5

Another heavy one .922 gallons.

I nominate you for a distinguished service award for you awesome work with the Scangauge!!!!Whoo Hoo... I hear by present myself with a Lama:bananalama::bananalama:

7th pip fell @ 645 miles, 82.0 MPG "gas"xgauge=32.5

Another heavy one .922 gallons.Yep... My 7th pip was heavy too. Looks consistent. I've updated the spreadsheet and will upload it shortly. I'm also running a sum of the "internal" pips. And our tanks are converging on these sums.

Few questions. Do you stuff your tanks or just stop when the pump shuts off? Also, are you noticing your "gas" xgauge changing at the same time your pips fall? When my 10th pip went from solid to flashing, I noticed "gas" change from 15 to 12.5.

Thanks again for all the data.

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My first pip fell this morning: 161.8 miles @ 78.3mpg

I don't stuff the tank - I stop when the pump shuts off.

Few questions. Do you stuff your tanks or just stop when the pump shuts off? Also, are you noticing your "gas" xgauge changing at the same time your pips fall? When my 10th pip went from solid to flashing, I noticed "gas" change from 15 to 12.5.
11011011

I normally just fill till it clicks then wait 10 seconds and fill till it click again. All of this at the medium speed on the pump.

Yeah the "gas" gauges jumps around alot. I noticed the last time it dropped @ 32.5 but the next few seconds it was up and down even lower sometimes. It seems to stay for a longer period of time at the 32.5 though.

You said in an earlier post you thought the pip looked for a value for a certain period of time then it would drop. From what I have seen I agree.

I've got my 9th and 10th pips coming up soon. I hope that 10th flashing pip is a super heavy one.

8th pip fell @ 708 miles 81.9 miles "gas" gauge said 27.5
According to the data we've collected so far i'll run out of gas @ 998 miles:(:mad:

8th pip fell @ 708 miles 81.9 miles "gas" gauge said 27.5
According to the data we've collected so far i'll run out of gas @ 998 miles:(:mad:I've made lots of updates... I'll post them tonight. I've also added a "projection" section. With your 8th pip, we have our first full map.... That will be good.

I'll be using the "gas" gauge a lot on my Hybrid Texas Tour coming up.

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I've updated the Excel file (http://www.cleanmpg.com/forums/downloads.php?do=file&id=35) to the files section.

CHANGELOG:

v1.0 - 06-29-08: Initial Release.
v1.1 - 06-29-08: Added Download Link.
Added discussion thread.
Added cell comments.
v1.2 - 07-10-08: Added more cell comments.
Added Will's tank.
Added Projection section.
Added Nice Round Number section.

Keep the data coming. Just remember to note if you stuff your tank and what the "gas" XGauge reads.

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My second pip fell: 200.1 miles & 78.7mpg- no SGauge yet!

Dan - great spreadsheet. Thanks for compiling this.

Aether glider - we're rooting for those last 2 miles! Awsome tank mileage!

I reject the information in my projection section.
I will achieve 1K miles!!

If i get within 25 miles of 1K and run out of gas I will be more motivated than ever.

Wonder if removing my spare tire and cargo tray and back carpet will help enough at this point? It certainly can't hurt. Will be removed during lunch!!!

I reject the information in my projection section.
I will achieve 1K miles!!

If i get within 25 miles of 1K and run out of gas I will be more motivated than ever.

Wonder if removing my spare tire and cargo tray and back carpet will help enough at this point? It certainly can't hurt. Will be removed during lunch!!!Go for it. Remember that if you run out of gas, you can restart the ice if you leave the car off for 60 seconds. Don't know what chance that has of putting air in your injection system, but if your 50 feet away, it may be all you need. I'm also dying to know if the "gas" gauge goes to 0 or just bottoms out at 2.5%. I suspect that once it goes to 0.0% it will trigger the red triangle fuel starve run down.

After looking at Larry's tanks, I'm convinced that the key to a KiloTank is adequate stuffing. If your serious about it, I'd just start a retry if you don't get at least 300 miles out of the first pip. You were about 30 miles shy of that on this tank. If you could have gotten another quarter gallon, and nice high 80 mpg on the top of the tank, you'd probably have it in the bag right now. So after this tank, just keep topping off till you get a stuffing that gives you 300 miles on pip one.

For Prius Stuffing I've heard of putting a 2x4 under the back left wheel to help in the efforts if your interested. Then fill till click, then top off a one gallon gas can. Then shake the car to "burp" the tank and get any air bubbles out. You also want to work any froth out of the bladder. Then add another pint and repeat. Eventually you will probably see the little pool of gas in the nozzle whole. Then your stuffed. I'm not a stuffer so this is all hearsay from me.

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9th pip fell @ 814.0 miles 82.6 MPG Gas gauge of 17.5

9th pip fell @ 814.0 miles 82.6 MPG Gas gauge of 17.5Looks like you might pull this off. Based on my projections if you can hold 82.6 you'll putter out at 999 miles. If you can hold 82.7 you'll make it to 1000.0 miles ;).

When you go to work next week consider walking (remember short trips kill FE) to the nearest station and getting a fuel can. Then fill it up seal it with a bunch of bags and duct tape and keep it as a fall back in case you putter out somewhere you don't want to be.

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I'm shooting for 83 mpg. I think i'm getting better numbers at the end due to the low fuel weight. I have to run some errands this weekend I might be @ fuel starve this weekend or Monday @ the latest.

My wife thinks this is stupid and has forbid me to run out of gas with our 2 yr old son. So i'll have to make an unnecessary trip right before it runs out. I didn't want to do that since this entire tank is real world, basically my normal commute and errands around town. No trips just to boost FE. I've only changed my route along my commute to help my FE.

I hope your right about me hitting the mark.

btw...gas gauge is extremely jumpy.

Good luck Aether Glider!

My 3rd pip fell yesterday - 242.8 miles at 78.8mpg (no xgauge)

Tomorrow my FE will drop quite a bit - will be going about 200 miles on I-5 with two kayaks on the roof rack - usually can only get high 40's with this setup!

Update:
still 1 solid pip @ 859.5 miles 82.6 MPG

Update:
still 1 solid pip @ 859.5 miles 82.6 MPG
If your car is anything like mine, it looks pretty good for a 1K tank for you.:flag: I would suggest double-checking your odometer as I discovered last year that mine was under-reporting by 1.6%. Good work and good luck!:)

I'm also dying to know if the "gas" gauge goes to 0 or just bottoms out at 2.5%. I suspect that once it goes to 0.0% it will trigger the red triangle fuel starve run down.

I did this last year by accident. My can-view was reporting something like %12 on my way to work and about 6 miles from work I seen it dropped to %0. Nothing happened and I made it to work. After work I drove another 5 or so miles to a gas station to fill up. Still nothing happened. My guess is that you will get the triangle when the car starts to sputter.

If your car is anything like mine, it looks pretty good for a 1K tank for you.:flag: I would suggest double-checking your odometer as I discovered last year that mine was under-reporting by 1.6%. Good work and good luck!:)

How did you confirm it was underreporting?

Jury is still out on 1K. All my spreadsheets say around 970 miles. I hope I'm wrong.
If I don't get it this time, hopefully after the EBH is installed that will help out a little.

I have gained alot of respect for the 1k Prius club. It takes amazing dedication to achieve that goal.

Dan there are ten pips. You seem to have left out the solid 10th pip. Maybe I am reading it wrong.Well since the 10th pip doesn't fall it transitions to flashing, I call that transition "flashing". Your correct though that "flashing" is really the weight of the 10th solid pip, and Starve is the weight of the 10th flashing pip. It just made more sense to me to call the last two transitions "flashing" and "starve" instead of 10-solid, 10-blinking.

11011011

How did you confirm it was underreporting?


I did 4 separate 50 mile stretches of I80-90 mileposts between Elkhart, IN and Sandusky, OH(Cedar Point) and the Prius odometer showed less(by the same amount) everytime. When I did the calculations, it came out to 1.6%.

If you get the same amount into your tank as I did on my last 1K tank, I show you going nearly 1025 miles. I had 12.4 gallons and I was still running. Perhaps I need to give my car the new nickname of "The Eveready Bunny.":D

Dan,
I got some good data for you concerning the fuel starve.
Gas xgauge will go way past 0.0. I have to do some family stuff i'll post all the data later.

Here is this tank's info:

Flashing pip @ 875.3 miles 82.5 MPG gas xgauge of 12.5

gas xgauge of 7.5 @ 939 miles 83.2 MPG
gas xgauge of 5.0 @ 958 miles 83.4 MPG
gas xguage of 2.5 @ 967 miles 83.4 MPG
gas xgauge of 0.0 @ 975 miles 83.5 MPG

Fuel Starve @ 1000 miles 83.8 MPG

I had a Soc of 54.0 at this point and went to 1002.9 miles 83.8 MPG till it dropped to a Soc of 47.0 and I coasted to a stop. Added 1 gallon of gas.

Went 1 mile and pumped in a total of 11.6 gallons. A total of 12.6 gallons. I think i could have added a little more but cars were waiting on me so i called it full.

http://i79.photobucket.com/albums/j127/forbessw/DSCN2060.jpg

Great job Aether Glider - congrats on the 1K tank!

Dan - I fell down on the job of pip counting yesterday. Had a passenger along with the kayaks on top and was too distracted to record them. It was over 90 degrees and I didn't want to subject my companion to no AC, so I had a double handicap. Still got 50mpg for the trip - best so far with the boats on top.

9th pip fell this morning - 535.6 miles - 59.7mpg

Flashing pip at lunch: 570.2 miles - 60.8 mpg

Way to go Aether glider. That's got to be the fastest assent to KiloTanker I've ever seen. Well done!

I don't know if it's high score, but it may be pretty close. My first pip after a heavy stuffing weighed 5.23 gallons... go figure.

First pip died on the road at 63.9 mpg with 329 miles. Thats a heavy weight champ pip of 5.23 gallons. If my pip calculations are correct that put my file somewhere around 13.5 gallons.

My method:

Wear Shades (no gas splash)
Back the wheel under the gas cap up on some 2x4s.
Fill till click
Remove nozzle.
Re-Insert nozzel 1 cm past the rubber gasket on the gas tank.
pull trigger on nozzel for 0.5 seconds.
If gas isn't all the way up to the lip, go back to step 4 and repeat.
If gas is filled all the way to the lip shake the car (rock left to right)
If gas receds from lip jump back to step 4.
If gas is still at lip consider tank stuffed!


Gas stuffing 101.. or Gas Stuffing 11011011

OK... more PIP math... I'm still saying this is too close to call. Winds have been to my back from Corpus, but last time I had a headwind, I only popped 62...

PIP|Miles|MPG|Weight (US gal)
1st|329|63.4|5.189
2nd|368|63.7|0.588
3rd|400|64.7|0.405

I'm currently showing 7 pips with 441 miles @ 66.1 mpg. My calcs put the next (4th) pip DOA within the next 10 miles :(

420 Highway miles to go... wish me luck guys!

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I lost my first pip today at 298.1 miles on the FCD(302.9 miles after figuring in my odo error) at 89.3 mpg.

89.3 is awesome. That was 3.3 gallons on your 1st pip.

Here is my Hybridfest trip up tank.
I could have made it the whole way but I was in unfamiliar territory so i thought it best to refill.
Pip MPG Miles Xgauge
1st 62.3 252.0 90
2nd 62.8 320.0 77.5
3rd 63.1 350.0 75
4th 63.6 403.0 60
5th 64.0 446.0 55
6th 63.7 512.0 47.5
7th 64.8 610.0 37.5
8th 65.2 651.0 27.5

Pips 2 and 3 gas xgauge didn't make any sense to me.
More bouncing around i guess.

I'm going for a KiloTank with AC, and I'll call the 0-40 "things" that make up the XGauge "gas" gauge (0-100%) ticks. So going from 100 to 97.5 registers as loosing the first tick.

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You're a brave man! AC!? I bet you can do it if you are able to stuff your tank like you did for the Hybrid Texan thing.
I will try again next tank. I have Wisconsin ethanol in there now :(

You guys are awesome!

Here's data from my last tank - haven't got the xgauge up yet:

PIP MPG Miles
1 70.9 88.6
2 74.1 144.4
3 76.1 205.0
4 70.9 274
5 69.4 306
6 67.7 343
7 66.7 446
8 66.5 470
9 68.6 562
flsh 69.5 617.5
fill 69.7 621.3

Here's data from my tank:
PIP MPG Miles
1 47.7 107
2 47.5 134
3 49.3 176
4 48.3 200
5 47.7 240
6 47.6 274
7 49.2 324
8 50.2 389
9 49.8 444

Fillup at 455 miles display read 50.1 MPG, but the bladder would only let me put in 7.221 gallons!?! It will be interesting to see what the next tank looks like.

Thanks for all the number crunching. :)