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Thread: Logging Results: PD130

  1. #1
    SL11CKK's Avatar
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    Logging Results: PD130

    So did some logging yesterday night of my 3rd and 4th gear from approx 2000rpm, and the results are in.

    I logged channel 11, 03 and 10

    Certain places it sort of spikes downwards, but please could you guys explain to me the results.


    The Actual MAF reading is higher compared to the specified, however this could be due to the EGR bypass I have in place.



    TIME Engine speed Spec. intake press. Actual intake press. D.cycle MAP STAMP Engine speed MAF (specified) MAF (actual) EGR duty cycle TIME MAF Atmos. pressure Intake air press. Throttle
    0.72 1974 1632 1521 40.6 0.01 1932 555 764.4 84.5 0.36 749.7 1009.8 1509.3 40
    1.8 2142 2295 2468.7 67.3 1.08 2016 850 1141.7 4.8 1.44 1249.5 1009.8 2316.6 100
    2.82 2289 2325.6 2246.4 58.6 2.13 2184 850 1107.4 4.8 2.47 1136.8 1009.8 2223 100
    3.9 2478 2346 2375.1 63.4 3.18 2352 850 1180.9 4.8 3.54 1205.4 1009.8 2328.3 100
    4.98 2688 2346 2363.4 66.1 4.26 2541 850 1180.9 4.8 4.62 1166.2 1009.8 2363.4 100
    6.06 2856 2346 2293.2 64.5 5.34 2751 850 1131.9 4.8 5.69 1107.4 1009.8 2304.9 100
    7.14 3045 2346 2328.3 65.7 6.42 2940 850 1112.3 4.8 6.78 1127 1009.8 2316.6 94.5
    8.22 3192 2346 2351.7 66.5 7.5 3108 850 1122.1 4.8 7.86 1122.1 1009.8 2351.7 83.1
    9.3 3318 2121.6 2035.8 56.2 8.58 3255 830 1053.5 4.8 8.94 965.3 1009.8 2129.4 62.7
    10.38 3402 2346 2304.9 67.7 9.66 3339 845 1161.3 4.8 10.02 1161.3 1009.8 2480.4 74.5
    11.46 3486 2254.2 2316.6 68.5 10.74 3444 850 1063.3 4.8 11.1 1078 1009.8 2293.2 77.3
    12.52 3549 2182.8 2375.1 79.7 11.82 3507 850 1097.6 4.8 12.18 1117.2 1009.8 2386.8 79.2
    71.7 2058 2274.6 2433.6 65.7 72.05 2100 850 1166.2 4.8 72.41 1156.4 1009.8 2269.8 100
    72.77 2205 2305.2 2258.1 58.6 73.13 2247 850 1195.6 4.8 73.49 1200.5 1009.8 2328.3 100
    73.85 2352 2325.6 2351.7 63.8 74.21 2415 850 1215.2 4.8 74.57 1210.3 1009.8 2386.8 100
    74.93 2520 2346 2386.8 66.1 75.29 2562 850 1146.6 4.8 75.65 1107.4 1009.8 2269.8 100
    76.01 2667 2346 2246.4 62.2 76.37 2709 850 1122.1 4.8 76.73 1136.8 1009.8 2293.2 100
    77.09 2814 2346 2316.6 63.4 77.45 2835 850 1136.8 4.8 77.81 1146.6 1009.8 2363.4 100
    78.17 2940 2346 2363.4 65.7 78.53 2961 850 1136.8 4.8 78.89 1122.1 1009.8 2351.7 100
    79.25 3045 2346 2351.7 67.3 79.61 3108 850 1107.4 4.8 79.97 1102.5 1009.8 2340 100
    80.33 3171 2346 2351.7 67.7 80.69 3213 850 1107.4 4.8 81.05 1097.6 1009.8 2340 100
    81.41 3276 2346 2328.3 66.1 81.77 3297 850 1087.8 4.8 82.13 1097.6 1009.8 2328.3 100
    82.46 3381 2346 2340 66.5 82.81 3402 850 1102.5 4.8 83.16 1082.9 1009.8 2351.7 100
    83.53 3465 2346 2351.7 67.3 83.89 3486 850 1087.8 4.8 84.25 1082.9 1009.8 2363.4 100
    84.61 3549 2346 2351.7 68.5 84.97 3591 850 1078 4.8 85.33 1078 1009.8 2351.7 100
    85.69 3654 2346 2351.7 68.1 86.05 3696 850 1073.1 4.8 86.41 1068.2 1009.8 2363.4 100
    86.77 3759 2346 2375.1 70.1 87.13 3801 850 1058.4 4.8 87.49 1048.6 1009.8 2351.7 100
    87.85 3864 2335.8 2340 70.5 88.17 3906 850 1038.8 4.8 88.49 1048.6 1009.8 2340 100
    88.81 3948 2325.6 2328.3 70.1 89.15 3969 850 1038.8 4.8 89.5 1024.1 1009.8 2328.3 100

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  3. #2
    Audi Doodah's Avatar
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    MAF is the minimum required air flow into the intake for a given acceleration. The actual will always be higher (unless there's a fault) because there's nothing to stop air going into the intake. MAF is basically Air, Yes or No...Yes, bang can happen...No, fault, no air, no bang.

    Your MAP (boost) readings appear good but some repeated throttle cycles normally give more info. Have a look a this recent thread.

    Results are easier to read in graph form so here's a how-to. Someone has posted a graphing tool on this forum that Swarcup used in the link above, but I can't find it. Maybe he can point you in the right direction if you don't have Excel.
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  4. #3
    SL11CKK's Avatar
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    On this graph ready are all over as I was going through all the gears, but not maxing the throttle.

    Engine speed Spec. intake press. Actual intake press. D.cycle MAP Engine speed MAF (specified) MAF (actual) EGR duty cycle MAF Atmos. pressure Intake air press. Throttle
    TIME 2850-3150 2200-2400 2100-2600 35-80% TIME 790-870 230-310 210-350 40-75% TIME 900-1250 sensor -f96- 2100-2600 100%
    STAMP /min mbar % STAMP /min mg/str mg/str % STAMP mg/str mbar %
    0.01 882 1050.6 1076.4 19.9 0.36 1407 640 490 19.9 0.72 749.7 1009.8 1275.3 52.2
    1.08 1575 1825.8 1579.5 33.1 1.44 1764 770 1014.3 4.8 1.81 1215.2 1009.8 2199.6 61.2
    2.16 2940 2019.6 2480.4 76.5 2.52 2814 295 651.7 4.8 2.89 984.9 1009.8 1696.5 82
    3.25 2310 2325.6 2176.2 53.4 3.6 2625 850 1249.5 4.8 3.96 1082.9 1009.8 2304.9 85.9
    4.3 3192 2346 2304.9 68.1 4.66 3402 500 1102.5 4.8 5.02 661.5 1009.8 1778.4 2.7
    5.38 2247 2315.4 1696.5 37.1 5.73 2352 850 1249.5 4.8 6.08 1195.6 1009.8 2597.4 68.6
    6.44 2562 1968.6 2187.9 61 6.8 2667 770 935.9 28.3 7.16 1019.2 1009.8 2035.8 58
    7.52 2835 1958.4 2106 68.1 7.88 2919 810 950.6 4.8 8.24 1058.4 1009.8 2117.7 63.5
    8.6 3087 2101.2 2187.9 72.5 8.96 3192 820 960.4 4.8 9.32 989.8 1009.8 2024.1 80
    9.68 3381 2346 2421.9 76.9 10.03 3486 850 994.7 4.8 10.38 1019.2 1009.8 2199.6 76.9
    10.75 3675 2346 2223 67.7 11.1 3780 850 1033.9 4.8 11.46 1033.9 1009.8 2304.9 73.7
    11.82 3507 1050.6 1895.4 51.8 12.16 2604 755 788.9 4.8 12.52 1038.8 1009.8 1907.1 43.9
    12.88 2604 1315.8 1591.2 58.6 13.26 2646 790 891.8 4.8 13.62 1205.4 1009.8 2152.8 60.4
    13.98 2730 2346 2269.8 61 14.34 2772 845 1200.5 4.8 14.7 847.7 1009.8 2106 59.6
    15.06 2835 2040 2070.9 69.3 15.42 2877 755 749.7 26.3 15.78 842.8 1009.8 1778.4 51.8
    16.14 2919 1856.4 1766.7 49.4 16.5 2961 760 911.4 47.4 16.85 833 1009.8 1836.9 52.5
    17.19 3003 1672.8 1731.6 65.3 17.54 3024 700 720.3 60.2 17.9 715.4 1009.8 1556.1 43.9
    18.26 3087 2346 1509.3 34.7 18.6 3129 850 1249.5 4.8 18.96 1043.7 1009.8 2585.7 75.7
    19.32 3213 2131.8 2164.5 72.5 19.68 3255 715 730.1 4.8 20.02 720.3 1009.8 1579.5 46.7
    20.38 3297 1458.6 1509.3 64.1 20.74 3297 655 705.6 4.8 21.1 671.3 1009.8 1474.2 27.1
    21.46 3276 1040.4 1380.6 50.6 21.82 3297 390 543.9 4.8 22.18 656.6 1009.8 1310.4 35.7
    22.54 3318 1509.6 1450.8 53.8 22.85 3339 710 842.8 4.8 23.17 769.3 1009.8 1708.2 51
    23.51 3402 2029.8 1755 59.8 23.86 3444 835 1131.9 4.8 24.22 705.6 1009.8 2047.5 8.2
    24.58 3402 1050.6 1532.7 50.6 24.94 3423 345 558.6 4.8 25.3 543.9 1009.8 1298.7 0
    25.66 3360 1050.6 1263.6 50.6 26.02 3318 335 548.8 4.8 26.38 539 1009.8 1251.9 0
    26.74 3234 1040.4 1251.9 50.2 27.1 3192 325 548.8 4.8 27.46 524.3 1009.8 1240.2 0
    27.82 2961 1030.2 1228.5 49.4 28.18 2814 295 524.3 4.8 28.54 529.2 1009.8 1205.1 0
    28.9 2520 1020 1193.4 44.2 29.26 2373 260 534.1 4.8 29.6 534.1 1009.8 1181.7 0
    29.96 2142 999.6 1170 40.2 30.32 2058 230 524.3 4.8 30.68 514.5 1009.8 1158.3 0
    31.04 2016 999.6 1146.6 38.6 31.4 2016 230 519.4 45.8 31.76 514.5 1009.8 1146.6 6.7


  5. #4
    Audi Doodah's Avatar
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    Are you trying to trace a fault because nothing looks out of the ordinary (even with too many plots on one graph!:-) )
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  6. #5
    SL11CKK's Avatar
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    I feel that it doesn't have power as it used to before.

    When shifting from 1st to 2nd from approx 2900rpm it used to even wheel spin, but now I can't for the life of me make it do that.

    Baring in mind I still have the same tyres as I had then.

    Intake manifold is spanking clean and have had the EGR bypass done. Its also running stock so don't have a clue what it may be.

  7. #6
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    Have you tried the Mr Muscle turbo clean?
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  8. #7
    SL11CKK's Avatar
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    Yep tried that. Still the same

  9. #8
    Audi Doodah's Avatar
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    Do another log but block 11 only. Then plot Specified vs Actual pressure only so we can see the boost log clearly. Every time I look at the graph above, I doubt which colour legend is for what line
    A4 Avant 1.9 TDi Sport GmbH

  10. #9
    SL11CKK's Avatar
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    Done the log of 3rd gear - Group 11:


  11. #10
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    Looks like a text book boost plot so perhaps your issue is elsewhere. You say your not getting the power down like you used to so maybe your clutch is past it's best?
    A4 Avant 1.9 TDi Sport GmbH

  12. #11
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    Fresh clutch in there LUK one

  13. #12
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    Well in that case, I'm all out of ideas...sorry, pal!
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  14. #13
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    Certainly looks like a good boost plot. I'd like to see logs of group 013 & 023 to see what the injectors are up to.
    A4 Avant B6 1.9 TDI 130 Sport (6) Moro Pearl Blue, GMBH S Line Kit, Decat pipe, 165bhp remap, EGR delete, Dunlop SP Max, Full Leather, Cruise Control, Full DIS, Bose, Audi phone prep, Cooled Glove Box, Rear privacy glass, Rear parking assist.
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  15. #14
    SL11CKK's Avatar
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    Ok. Ill wait until tonight and post it up. Just want to make sure everything is cool before I get it mapped too.

  16. #15
    SL11CKK's Avatar
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    OK im confused by this one so didn't post the pic of the actual graph.

    Group A: 013 Group B: 023
    Cyl 1 Cyl 2 Cyl 3 Cyl 4 (no units) (no units) (no units) (no units)
    TIME -2.8 to +2.8 mg/H -2.8 to +2.8 mg/H -2.8 to +2.8 mg/H -2.8 to +2.8 mg/H TIME
    Marker STAMP mg/str mg/str mg/str mg/str STAMP
    0.31 -1.08 -0.33 0.94 0.42 0 -23 -10 -3 -2
    1.03 -1.08 -0.33 0.94 0.42 0.67 -20 -17 -9 -14
    1.75 -1.08 -0.33 0.94 0.42 1.39 -18 -17 -14 -18
    2.47 -1.08 -0.33 0.94 0.42 2.11 -17 -22 -8 -20
    3.19 -1.08 -0.33 0.94 0.42 2.83 -5 -7 -5 -6
    3.91 -1.08 -0.33 0.94 0.42 3.55 7 -13 -7 -9
    4.62 -1.08 -0.33 0.94 0.42 4.27 -5 -25 -15 -1
    8.21 -1.08 -0.33 0.94 0.42 8.57 -6 -23 -24 -26
    8.93 -1.08 -0.33 0.94 0.42 9.29 -6 -23 -24 -26
    9.64 -1.08 -0.33 0.94 0.42 9.98 -6 -23 -24 -26
    10.35 -1.08 -0.33 0.94 0.42 10.7 -6 -23 -24 -26
    11.06 -1.08 -0.33 0.94 0.42 11.42 -6 -23 -24 -26
    11.78 -1.08 -0.33 0.94 0.42 12.14 -18 -21 -6 -20
    12.5 -1.08 -0.33 0.94 0.42 12.86 -33 -24 -6 -26
    13.22 -1.08 -0.33 0.94 0.42 13.58 -25 -23 3 -15
    13.94 -1.08 -0.33 0.94 0.42 14.29 -23 -26 -4 -21
    14.64 -1.08 -0.33 0.94 0.42 15.01 -21 -27 -8 -22
    15.37 -1.08 -0.33 0.94 0.42 15.73 -20 -17 -4 -21
    16.09 -1.08 -0.33 0.94 0.42 16.45 -23 -21 -1 -25
    16.79 -1.08 -0.33 0.94 0.42 17.16 -17 -19 -1 -15
    17.52 -1.08 -0.33 0.94 0.42 17.86 -17 -19 -1 -15
    18.22 -1.08 -0.33 0.94 0.42 18.58 -17 -19 -1 -15
    18.94 -1.08 -0.33 0.94 0.42 19.3 -17 -19 -1 -15
    19.66 -1.08 -0.33 0.94 0.42 20.02 -17 -19 -1 -15
    20.36 -1.08 -0.33 0.94 0.42 20.72 -17 -19 -1 -15
    21.08 -1.08 -0.33 0.94 0.42 21.44 -17 -19 -1 -15
    21.79 -1.08 -0.33 0.94 0.42 22.14 -17 -19 -1 -15
    22.5 -1.08 -0.33 0.94 0.42 22.86 -17 -19 -1 -15
    23.22 -1.08 -0.33 0.94 0.42 23.59 -17 -19 -1 -15
    23.94 -1.08 -0.33 0.94 0.42 24.3 -17 -19 -1 -15
    24.66 -1.08 -0.33 0.94 0.42 25.02 -17 -19 -1 -15
    25.38 -1.08 -0.33 0.94 0.42 25.72 -17 -19 -1 -15
    26.08 -1.08 -0.33 0.94 0.42 26.44 -17 -19 -1 -15
    26.8 -1.08 -0.33 0.94 0.42 27.16 -17 -19 -1 -15
    27.52 -1.08 -0.33 0.94 0.42 27.88 -17 -19 -1 -15
    28.24 -1.08 -0.33 0.94 0.42 28.58 -17 -19 -1 -15
    28.94 -1.08 -0.33 0.94 0.42 29.3 -17 -19 -1 -15
    29.66 -1.08 -0.33 0.94 0.42 30.02 -17 -19 -1 -15
    30.38 -1.08 -0.33 0.94 0.42 30.74 -17 -19 -1 -15
    31.1 -1.08 -0.33 0.94 0.42 31.46 -11 -13 9 -3
    31.82 -1.06 -0.33 0.96 0.4 32.18 -2 -9 9 1
    32.54 -1.06 -0.35 0.96 0.42 32.9 -2 -13 10 1
    33.26 -1.06 -0.38 0.96 0.49 33.62 -1 -11 13 2
    33.98 -1.08 -0.38 0.92 0.49 34.34 0 -13 12 6
    34.7 -1.01 -0.35 0.85 0.49 35.06 -7 -16 6 1
    35.42 -0.87 -0.33 0.75 0.4 35.78 -4 -16 8 -1
    36.14 -0.85 -0.38 0.8 0.38 36.5 -7 -16 8 2
    36.86 -0.85 -0.38 0.78 0.4 37.22 -5 -11 13 -2
    37.58 -0.87 -0.4 0.8 0.42 37.94 0 -12 11 0
    38.3 -0.89 -0.38 0.8 0.47 38.66 -3 -9 13 4
    39.02 -0.92 -0.4 0.78 0.49 39.38 -2 -10 14 4
    39.74 -0.94 -0.42 0.8 0.54 40.1 -1 -13 18 3
    40.46 -0.94 -0.49 0.82 0.61 40.8 4 -11 18 7
    41.16 -0.99 -0.52 0.8 0.68 41.52 -3 -12 13 0
    41.88 -1.01 -0.59 0.85 0.71 42.24 -5 -14 9 0
    42.6 -0.99 -0.64 0.89 0.68 42.96 -8 -17 8 3
    43.3 -0.94 -0.71 0.99 0.64 43.66 -11 -16 8 2
    44.02 -0.85 -0.75 1.04 0.54 44.38 -3 -11 8 4
    44.74 -0.85 -0.75 1.04 0.54 45.1 -9 -15 11 1
    45.46 -0.85 -0.75 1.04 0.54 45.82 -8 -19 12 1
    46.18 -0.85 -0.75 1.04 0.54 46.54 -7 -16 12 1
    46.9 -0.85 -0.75 1.04 0.54 47.26 -6 -13 14 1
    47.62 -0.85 -0.75 1.04 0.54 47.98 -9 -14 17 2
    48.34 -0.85 -0.75 1.04 0.54 48.7 -4 -9 13 -4
    49.06 -0.85 -0.75 1.04 0.54 49.42 -3 -9 14 -4
    49.78 -0.85 -0.75 1.04 0.54 50.14 -3 -9 14 -4
    50.5 -0.85 -0.75 1.04 0.54 50.86 -3 -9 14 -4
    51.22 -0.85 -0.75 1.04 0.54 51.58 -3 -9 14 -4
    51.94 -0.85 -0.75 1.04 0.54 52.3 -3 -9 14 -4
    52.66 -0.85 -0.75 1.04 0.54 53.02 -3 -9 14 -4
    53.38 -0.85 -0.75 1.04 0.54 53.74 -3 -9 14 -4
    54.1 -0.85 -0.75 1.04 0.54 54.46 -3 -9 14 -4
    390.83 -0.94 -0.99 1.18 0.75 391.19 -13 -21 5 -8
    391.55 -0.94 -0.99 1.18 0.75 391.91 -16 -28 -5 -20
    392.27 -0.94 -0.99 1.18 0.75 392.63 -7 -15 0 -15
    392.99 -0.94 -0.99 1.18 0.75 393.35 -11 -19 -14 -24
    393.71 -0.94 -0.99 1.18 0.75 394.07 -3 -18 -3 -21
    394.43 -0.94 -0.99 1.18 0.75 394.79 5 -6 -5 -6
    395.15 -0.94 -0.99 1.18 0.75 395.51 5 -13 -1 -9
    501.34 -0.09 -0.82 0.61 0.21 500.98 5 -9 21 8
    502.06 -0.09 -0.82 0.61 0.21 501.7 -6 -24 5 -5
    502.78 -0.09 -0.82 0.61 0.21 502.42 -5 -25 0 -15
    503.5 -0.09 -0.82 0.61 0.21 503.14 -7 -22 6 -9
    504.22 -0.09 -0.82 0.61 0.21 503.86 -7 -24 -13 -17
    504.94 -0.09 -0.82 0.61 0.21 504.58 -5 -25 3 -22
    505.66 -0.09 -0.82 0.61 0.21 505.3 -6 -22 -6 -8
    506.38 -0.09 -0.82 0.61 0.21 506.02 12 -15 0 -3
    507.1 -0.09 -0.82 0.61 0.21 506.74 4 -14 -1 -5
    507.82 -0.09 -0.82 0.61 0.21 507.46 -10 -13 -5 -15
    508.54 -0.09 -0.82 0.61 0.21 508.18 -28 -32 -20 -28
    509.26 -0.09 -0.82 0.61 0.21 508.9 -36 -15 -19 -13
    578.17 -0.68 -0.38 0.85 0.16 577.81 11 -8 26 5
    578.89 -0.68 -0.35 0.89 0.14 578.53 10 -10 22 5
    579.61 -0.75 -0.35 0.94 0.16 579.25 3 -7 22 5
    580.33 -0.82 -0.35 1.01 0.19 579.97 9 -8 22 7
    581.05 -0.89 -0.35 1.04 0.21 580.69 12 -10 24 1

  17. #16
    Audi Doodah's Avatar
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    Injectors logs are "status checks" rather than graph logs.

    Seems you could have one or two problem injectors. A value of around 1 mg/str in block 13 usually indicates a problem. Lots of negative values in block 23 doesn't look good either. Have a look at block 18 and see if there's any figures logging there, ideally they should be all zeros.

    Here's a link to Paul's thread where he had a problem injector

    Your problems could be cured with some injector cleaner (I've used Liqui Moly Diesel Purge). Failing that, you need to check the injector lash, as described in Paul's thread. Then it's swapping out injectors to trace which one/ones are at fault. It could also be worn camshaft lobes, particularly if you car has been on the long life service plan.

    I'm sure Paul will be along soon to share his hands-on knowledge.
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  18. #17
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    I think ive just got a heart attack!

  19. #18
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    Sorry, mate!

    Finger's crossed they're just dirty. Google the Liqui Moly Diesel Purge. You pump the stuff through the engine instead of fuel (direct through the fuel lines and not the tank). It left a big patch of soot at my exhaust when I did mine and it brought my figures down in block 18.
    SL11CKK likes this.
    A4 Avant 1.9 TDi Sport GmbH

  20. #19
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    I've just ordered a 500ml can now. So hopefully its just clogged and nothing major.

    Also how do I check for cam wear without opening my rocker. I know I look through the oil cap, but what am I looking for to be precise.

  21. #20
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    Very limited view through the oil filler cap so ideally rocker cover off. Plenty of images if you google but a good lobe will have a smooth, even surface with no scores, grooves, ridges, etc. From what I've read, it seems to be more common on the 2.5 Tdi rather than the 1.9 Tdi though
    A4 Avant 1.9 TDi Sport GmbH

  22. #21
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    Yes, you need to get the rocker cover off & check the cam lobes. PD engine has known wear issues with worn cam lobes.
    Cover is easy to remove but i would advise that you get a new rocker gasket, £18ish from TPS IIRC. If the cam looks ok it would point to injectors failing, again not uncommon.
    A4 Avant B6 1.9 TDI 130 Sport (6) Moro Pearl Blue, GMBH S Line Kit, Decat pipe, 165bhp remap, EGR delete, Dunlop SP Max, Full Leather, Cruise Control, Full DIS, Bose, Audi phone prep, Cooled Glove Box, Rear privacy glass, Rear parking assist.
    2003 Seat Ibiza 1.2 TSI FR in Lima green.

  23. #22
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    Ok, finally the can is here, but do you guys know what size is the pipe I need to get.

    Im thinking of nipping over to machinemart or eurocarparts to get the hoses and joints

  24. #23
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    I think i used 8mm tubing that I got from ebay along with some metal pipe connectors. Be aware that normal silicon tubing goes very soft with the hot fuel so I recommend getting high temp tubing. Also, because you're potentially dislodging crap in the engine, I'd recommend doing an oil, oil filter and fuel filter change after doing a purge.
    A4 Avant 1.9 TDi Sport GmbH

 

 

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