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Another Mileage Thread

Discussion in '2nd Gen. Tacomas (2005-2015)' started by fadippides, Jan 12, 2012.

  1. Jan 12, 2012 at 8:16 PM
    #1
    fadippides

    fadippides [OP] Well-Known Member

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    I was experimenting to obtain some mileage figures on a trip. The first leg was 153.3 miles and I averaged 25.2 mpg! This is for the V6 Double Cab 4x4. I kept the speed at no more than 61/62. Speed limit was 65 and it wasnt crowded (or I would have had to go faster). Many parts had a speed limit of 55.

    To be fair there is a 20 mile stretch that gives great mileage. For example in my old car I would average about 30 mpg overall on the highway. For this 20 mile stretch I would get 40mpg.

    After that run, I tried bumping the speed up to 70mph (with 35% @ 60mph due to speed limits) and averaged 20.1mpg, not terrible, but not meeting epa figrues.

    This is only one set of runs, I plan to make many more over the next several months along the same path. For this run, I used 93 octane gas and am logging various data with the torque android application (thanks for the thread brokentusk Write-Up: Torque APP OBD2 Reader )

    I hope to prove/discover a few things:

    1) The effect premium has on mileage
    2) The effect premium has on the timing advance
    3) The ECUs timing chart based on load and RPM
    4) Difference between 60mph mpg and 70mph mpg
    5) Transmission Temperature during long trips

    In addition, I plan on establishing an online Tacoma database based on the ouput of torque where we can share each others data to help diagnose problems, compare effects of mods, etc. You will be able to search for specific conditions and see car data.

    -------------------------------------------------------------------------------------------------------------------------------

    Edit 1/29

    Both legs run in reverse direction under approx same speed scenarios as original. It was very windy so these numbers will be off some.

    153.3 miles
    19.9 mpg run
    777 ft starting point
    2620 ft end point

    123.0 miles
    19.8 mpg
    1059 ft starting point
    777 ft end point


    I also starting messing around with some timing data and have an example on what I will be working on. I just need to automate it one of these nights. Left column is RPM, Top row is load. These are the averages logged into a database. Once I get the structure how I want it, I will post the code and we can see if we can pool various tacomas to see the differences.

    [​IMG]
    timing by phadippides, on Flickr



    ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    2/2 edit

    153.3 miles
    24.2 mpg run
    777 ft end point
    2620 ft start point

    123.0 miles
    20.7 mpg
    1059 ft end point
    777 ft start point

    --------------------------------------------------------------------------------------------------------------------

    I've played around a little bit with the information I input into a database. I still need to get some things a little more accurate. For example, there are various 5 mpg jumps with a 1mph difference. This may just need more data input into it. The RPMs also seem slightly low, but close to normal. This data is from running 93 octane.

    MPH MPG Count RPM
    1 3.49035 26 680.7692
    2 8.97915 72 766.9861
    3 4.0227 44 837.7045
    4 9.59115 170 813.4118
    5 10.257075 176 910.1932
    6 6.526125 67 965.2090
    7 11.982 167 1042.4491
    8 9.9669 83 1025.9880
    9 9.743625 235 1010.5362
    10 9.535125 185 1048.2054
    11 10.5798 94 1069.8723
    12 10.45425 164 1153.3537
    13 11.07855 70 1148.9000
    14 12.437925 149 1164.1812
    15 14.1096 187 1161.3048
    16 13.18965 58 1229.6724
    17 13.845225 126 1218.8254
    18 12.68535 58 1258.8103
    19 14.881875 127 1203.9528
    20 16.63545 216 1218.1620
    21 18.624975 84 1207.4048
    22 17.1039 154 1264.1558
    23 17.03445 167 1281.5030
    24 22.323525 68 1251.6029
    25 20.151225 205 1291.5317
    26 17.286375 227 1334.7137
    27 20.927475 393 1288.9288
    28 21.8682 368 1299.7663
    29 19.278975 190 1365.1579
    30 20.653125 307 1375.8404
    31 21.221475 193 1373.2539
    32 22.762725 294 1371.0306
    33 24.57855 245 1330.7959
    34 23.04135 133 1326.1654
    35 24.340425 304 1292.2763
    36 26.61915 128 1333.2344
    37 27.4815 324 1334.8981
    38 30.67335 274 1306.8796
    39 33.3147 112 1261.4464
    40 29.38965 188 1380.5479
    41 30.45435 104 1369.1154
    42 28.1667 189 1449.5714
    43 29.465175 366 1407.7623
    44 29.930775 130 1421.9154
    45 23.741175 226 1486.6460
    46 25.926 250 1491.4600
    47 23.534475 145 1540.3931
    48 24.8415 549 1565.9144
    49 23.5218 229 1552.8035
    50 23.651625 394 1577.3959
    51 27.336975 296 1594.4662
    52 27.64155 166 1605.2651
    53 24.514125 283 1706.4629
    54 16.7688 971 1656.7796
    55 19.576125 4651 1664.0202
    56 20.914575 5173 1682.7674
    57 26.86605 448 1723.3839
    58 24.718125 612 1744.8137
    59 22.682175 280 1792.1821
    60 23.2224 1251 1823.1519
    61 32.8002 548 1839.0255
    62 34.061475 236 1883.3729
    63 30.636225 422 1877.5853
    64 24.741075 168 1928.7976
    65 21.05655 411 1984.1314
    66 15.6885 1256 2047.0470
    67 24.44715 421 2035.9477
    68 19.54845 1455 2047.9519
    69 18.576975 3138 2068.8572
    70 16.666125 623 2158.2536
    71 19.106175 1274 2187.4443
    72 20.456775 370 2225.3108
    73 15.858825 1199 2245.5021
    74 18.2502 1307 2277.3665
    75 26.70765 431 2291.6265
    76 25.0581 241 2269.5228



    --------------------------------------------------------------------------------------------------------------------------------
    2/20 edit

    153.3 miles (VERY WINDY)
    18 mpg run
    777 ft starting point
    2620 ft end point

    123.1 miles (VERY WINDY)
    21.6 mpg
    1059 ft starting point
    777 ft end point (last 93 oct tank)

    Had two tanks of 87 octane in between

    155 miles
    21.3 mpg run
    777 ft starting point
    2620 ft end point

    123.9 miles
    22.4 mpg
    1059 ft starting point
    777 ft end point

    Initial impression is better mpg on 87, but still have several more tanks to go.

    -------------------------------------------------------------------------------------------------------------------------------
    2/25 update

    155.0 -> 21.3
    777 ft starting point
    2620 ft end point

    123.9 -> 22.4
    1059 ft starting point
    777 ft end point

    154.0 -> 22.9mpg
    2620 ft starting point
    777 ft end point

    122.8 -> 20.7mpg
    777 ft starting point
    1059 ft end point

    Seems like 87 is winning the mpg battle which is odd....I wonder if summer blend started but I will get some more data points. I also need to put the 87 octane readings from torque into my database and see how the charts compare. My overall fuelly mpg has been trending up which counts more then these two datapoints.
     
  2. Jan 12, 2012 at 8:29 PM
    #2
    BARTRD

    BARTRD Well-Known Member

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    sub'd for future updates
     
  3. Jan 12, 2012 at 8:42 PM
    #3
    fadippides

    fadippides [OP] Well-Known Member

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    Forgot to post the elevations from the data collected:
    25.2 mpg run
    2620 ft starting point
    540 ft low point
    777 ft end point


    20.1 mpg run
    777 ft starting point
    1059 ft end point
     
  4. Jan 12, 2012 at 8:50 PM
    #4
    ROGU3 PR3DATOR

    ROGU3 PR3DATOR Space Shuttle Door Gunner

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    Click my Sig Pic for my build thread. Too many to list here.
  5. Jan 29, 2012 at 9:09 PM
    #5
    fadippides

    fadippides [OP] Well-Known Member

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    Added 1/29 update
     
  6. Feb 2, 2012 at 8:05 PM
    #6
    fadippides

    fadippides [OP] Well-Known Member

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    Added 2/2 Update
     
  7. Feb 14, 2012 at 8:46 PM
    #7
    fadippides

    fadippides [OP] Well-Known Member

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    2/14 update with some data results
     
  8. Feb 14, 2012 at 9:17 PM
    #8
    TnShooter

    TnShooter Well-Known Member

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    That is pretty cool. I'd say it needs a little more tweaking.
    As you have pointed out. (exp. 74mph is 18mpg and 75mph is 26mpg)

    I've found that if I keep my RPMs under 2,000, I get noticeably more mpg.
    But that's hard to do some times.
     
  9. Feb 14, 2012 at 9:23 PM
    #9
    fadippides

    fadippides [OP] Well-Known Member

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    The 74 and 75 mph I may actually be able to explain, In the areas with that high of a speed limit it is a lot of 6% mountain grades. When on cruise normally a mph will be shaved off going up, which would yield a lower number.

    I had to adjust the mpg with a correction factor of .75 because the OBDII scanner seems to be reading high (I need to figure out how to adjust this in Torque), but I made the MPG of the data match my Fuelly average so it will be close. Also, the data is in km/hr so I had to adjust that as well.
     
  10. Feb 14, 2012 at 9:24 PM
    #10
    fadippides

    fadippides [OP] Well-Known Member

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    I will probably run one or two more tanks of 93 oct then switch back to 87 for those numbers before the summer gas gets here otherwise it will be hard to compare the data.
     
  11. Feb 20, 2012 at 5:32 PM
    #11
    fadippides

    fadippides [OP] Well-Known Member

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    Adding a Polynomial chart based upon above data. I need to update with the latest OBD information and start comparing octane results.

    [​IMG]
    mpg by phadippides, on Flickr
     
  12. Feb 20, 2012 at 5:41 PM
    #12
    12Tacoma

    12Tacoma Well-Known Member

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    Interesting reading are you taking into account temperature fluctuations?

    I see a 3-4 mpg drop below 55oF OAT.
     
  13. Feb 20, 2012 at 6:03 PM
    #13
    fadippides

    fadippides [OP] Well-Known Member

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    I havent done anything with the temperatures yet. Testing has mainly been done with temperatures between 20-50 degrees. I am trying to get some tanks on 87 octane before the weather warms up and summer gas is used.
     
  14. Feb 20, 2012 at 6:40 PM
    #14
    supralight

    supralight Well-Known Member

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    nice thread. I think the numbers seems to be on spec for the poly mpg graph. I have observed too that the truck gets best MPG at 50 mph, and seem to get flat 20 average at approx 115km/h (70 mph). Surely, you wont get a 20 average for shorter trips doing 70, but instantaneous reading will be around 20 mpg on highway, with a hot engine.
     
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