changing the TPS value...

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Mar 25, 2004 | 10:56 PM

rraulston

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changing the TPS value...

o.k., i bumped up the TPS value to 35. It is way better than before but i get one big miss when it transitions. What would happen if you set it to 0 so there is no transition??? One more question, in the timing, i see the number my ecu would run and i see the UTEC corrected number. If my ECU says it would run 18 degrees and the utec says 12 (hypotheticle) can i use this as a guide to bump up the UTEC's timing??? Ray

Mar 26, 2004 | 05:11 PM

nmyeti

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From: Gaithersburg, MD USA

Re: changing the TPS value...

Quote:

Originally posted by rraulston
o.k., i bumped up the TPS value to 35. It is way better than before but i get one big miss when it transitions. What would happen if you set it to 0 so there is no transition??? One more question, in the timing, i see the number my ecu would run and i see the UTEC corrected number. If my ECU says it would run 18 degrees and the utec says 12 (hypotheticle) can i use this as a guide to bump up the UTEC's timing??? Ray

1. It's not a good idea to set your crossover to 0. I am not sure the program will physically let you do it, but I could be wrong.

2. Can you log the section that causes the hesitation for me?

3. If the stock ECU would run a lot more timing in a given load site you might want to try adding a degree or so just to see what you can get away with.

-Nathan
www.turboxs.com

Mar 26, 2004 | 09:36 PM

rraulston

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o.k. ill log it this weekend.

Mar 27, 2004 | 09:15 PM

MalibuJack

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From: Royse City, TX

Yeah I noticed the same thing.. Its either the timing being different than stock at the transition point, or the MAF sensor's value jumping suddenly at the transition point..

I'm finding the same thing happens, and at 33% its not that bad since it will happen rarely in daily part throttle driving..

Possibly a revision to the FLASH to "blend" the values at the transition point so the MAF sensor and timing don't suddenly change?

Mar 28, 2004 | 05:41 AM

Imprezd

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Jack,

Possibly smoothing out your transitions between open and closed loop will fix it. We used to see this issue withe wrx until we got them used to smoothing of the maps. From the 0 percent column to 100. Especially the 0 column which is the closed loop portion controls.

Let us know how you make out guys.

Jermaine~
Www.turboxs.com

Mar 28, 2004 | 07:49 AM

MalibuJack

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From: Royse City, TX

I think my car's ECU is tuned more aggressively than other cars by virtue of how different the car runs compared to others.

I did notice that my car has a stumble (even stock) at about 5000 rpm and I haven't been able to get a good capture of it other than there's absolutely no knock.. I suspect its time to change my plugs again or my stock DV is leaking boost causing it to feel like its stumbling when it blows off slightly (again I can't see anything I can just feel it)

Mar 28, 2004 | 02:37 PM

rraulston

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Code:

     DATA1

"    ,     ,     ,   ,Load,Knock,      ,      , Mod,  Mod,      ,  Mod,  WB "
" RPM,  MAP,  MAF,TPS,Site,Count, Ign#1, Inj#1, Ign,  Fuel,Boost,  MAF,  AFR"
"    ,  psia,  Hz, % ,    ,     ,  deg , duty , deg,   %  ,(OL) ,   Hz,"






" 3542,+27.2, 478, 27, 00,   00,  +22.6,  15.0,ECU. , +0.0,ECU.  , 499, 14.65"
" 3631,+27.2, 501, 27, 00,   00,  +21.5,  15.0,ECU. , +0.0,ECU.  , 505, 14.65"
" 3732,+27.2, 520, 27, 00,   00,  +21.6,  16.0,ECU. , +0.0,ECU.  , 516, 14.61"
" 3866,+27.2, 830, 52, 10,   00,  +10.8,  31.0, +7.5, +0.2,ECU.  , 939, 14.22"
" 3982,+27.2,1028, 53, 10,   00,   +6.8,  42.0, +8.0, +0.0,ECU.  ,1207, 12.86"
" 4203,+27.4,1187, 51, 30,   00,   +4.0,  53.0, +8.0, -0.3,ECU.  ,1196, 11.87"
" 4385,+27.2,1408, 50, 40,   00,   +1.2,  59.0, +8.6, -1.2,ECU.  ,1196, 11.58"
" 4604,+27.0,1457, 50, 60,   00,   +2.7,  58.0, +8.0, -2.8,ECU.  ,1096, 11.48"
" 4859,+27.2,1562, 48, 70,   00,   +4.8,  60.0, +8.8, -4.0,ECU.  ,1436, 11.62"
" 5104,+27.2,1677, 46, 70,   03,   +7.1,  62.0,+10.0, -6.1,ECU.  ,1358, 11.68"
" 5307,+27.2,1519, 42, 80,   00,   +7.1,  62.0, +9.3, -6.8,ECU.  ,1445, 11.62"
" 5518,+27.4,1592, 41, 80,   00,   +7.2,  65.0,+10.1, -8.6,ECU.  ,1420, 11.71"
" 5649,+27.2,1344, 35,100,   00,  +10.1,  59.0, +9.6, -7.5,ECU.  ,1282, 11.67"
" 5473,+27.2, 153, 10, 00,   00,  +28.4,   5.0,ECU. , +0.0,ECU.  , 132, 11.34"
" 5089,+27.2,  87,  0, 00,   00,  +38.2,   5.0,ECU. , +0.0,ECU.  ,  71, 12.27"
" 4681,+27.0, 132,  0, 00,   00,  +28.2,   5.0,ECU. , +0.0,ECU.  ,  66, 13.65"
" 4391,+27.2, 378, 21, 00,   00,  +34.7,  10.0,ECU. , +0.0,ECU.  , 430, 13.68"
" 4084,+27.0, 542, 36, 10,   00,  +26.9,  19.0, +8.0, +0.0,ECU.  , 612, 13.78"
" 4161,+27.0, 783, 46, 10,   00,  +17.8,  26.0, +8.0, +0.0,ECU.  , 862, 13.47"
" 4235,+27.2,1006, 50, 10,   00,  +11.8,  36.0, +8.0, +0.0,ECU.  , 984, 12.56"

here is a try at it. Got alot of knock today might be bad gass. I tied a diff station and it was into the 90's.

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Mar 28, 2004 | 03:28 PM

whiterexman

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From: Houston, TX

I have the same hesitation/stumble here too.

My Utec came with TPS set to 35% and the hesitation/stumble was pretty noticeable. I lower it to 33% and it does seems to help a bit but it's still there. One time I even got a knock count (CEL flash) right when I step on the gas paddle to give it more gas during take off.

Here's one stop-go-stop log with TPS set to 33%.

Code:

 
 RPM, MAP, MAF, TPS, Site, Count, Ign#1, Inj#1, Ign, Fuel, Boost, MAF, AFR
  862 +25.5   29   1  00    00    +3.2    1.0 ECU.   +0.0 ECU.     28
  857 +25.5   28   1  00    00    +4.3    1.0 ECU.   +0.0 ECU.     28
  875 +25.5   29   1  00    00    +3.2    1.0 ECU.   +0.0 ECU.     29
  850 +25.5   28   1  00    00    +4.2    1.0 ECU.   +0.0 ECU.     28
  867 +25.5   28   1  00    00    +3.2    1.0 ECU.   +0.0 ECU.     29
  864 +25.5   28   1  00    00    +4.2    1.0 ECU.   +0.0 ECU.     28
  854 +25.7   29   1  00    00    +3.2    1.0 ECU.   +0.0 ECU.     28
  844 +25.7   29   1  00    00    +3.2    1.0 ECU.   +0.0 ECU.     28
  860 +25.7   28   1  00    00    +5.3    1.0 ECU.   +0.0 ECU.     27
  862 +25.7   29   1  00    00    +2.2    1.0 ECU.   +0.0 ECU.     29
  863 +25.5   44   3  00    00    +4.2    0.0 ECU.   +0.0 ECU.    150
 1153 +25.3  165  52  10    00    +4.3    4.0 +18.0  +0.0  61.00  147
 1654 +25.3   44   1  00    00   +14.8    1.0 ECU.   +0.0 ECU.     43
 1341 +25.1  181  20  00    00   +21.0    7.0 ECU.   +0.0 ECU.    176
 1420 +25.3  146  24  00    00   +14.8    5.0 ECU.   +0.0 ECU.    131
 1446 +25.3  151  25  00    00   +16.1    5.0 ECU.   +0.0 ECU.    150
 1434 +25.5  141  30  00    00   +13.3    5.0 ECU.   +0.0 ECU.    158
 1404 +25.5  173  30  00    00   +12.3    5.0 ECU.   +0.0 ECU.    150
 1338 +25.5  144  30  00    00   +11.3    5.0 ECU.   +0.0 ECU.    133
 1425 +25.5  173  31  00    00   +11.1    5.0 ECU.   +0.0 ECU.    142
 1668 +25.5  163  33  10    00   +13.2    7.0 +14.6  +0.0 ECU.    208
 1874 +25.5  203  33  10    00   +15.1    8.0 +13.0  +0.0 ECU.    238
 2072 +25.5  246  33  10    00   +17.4    9.0 +11.4  +0.0 ECU.    239
 2357 +25.5  274  30  00    00   +18.5   10.0 ECU.   +0.0 ECU.    249
 2540 +25.3  242  26  00    00   +19.8   10.0 ECU.   +0.0 ECU.    259
 2741 +25.3  278  26  00    00   +22.8   10.0 ECU.   +0.0 ECU.    281
 2976 +25.5  294  25  00    00   +27.0   11.0 ECU.   +0.0 ECU.    284
 3124 +25.5  279  25  00    00   +27.5   10.0 ECU.   +0.0 ECU.    282
 3267 +25.5  213  23  00    00   +29.7    8.0 ECU.   +0.0 ECU.    209
 3280 +25.5   45   3  00    00   +36.8    6.0 ECU.   +0.0 ECU.     37
 2997 +25.5  166   2  00    00   +44.8    3.0 ECU.   +0.0 ECU.     44
 2745 +25.5  221   1  00    00   +25.6    3.0 ECU.   +0.0 ECU.     29
 2544 +25.5   31   2  00    00   +20.7    3.0 ECU.   +0.0 ECU.     32
 2270 +25.5   36   1  00    00   +16.4    3.0 ECU.   +0.0 ECU.     38
 2056 +25.3   35   5  00    00   +21.1    2.0 ECU.   +0.0 ECU.     42
 2184 +25.3   50   9  00    00   +25.5    2.0 ECU.   +0.0 ECU.     58
 2177 +25.3  126  16  00    00   +35.2    4.0 ECU.   +0.0 ECU.    124
 2115 +25.7  127  16  00    00   +33.5    5.0 ECU.   +0.0 ECU.    129
 2243 +25.9  176  21  00    00   +31.5    6.0 ECU.   +0.0 ECU.    180
 2314 +25.9  169  21  00    00   +31.5    7.0 ECU.   +0.0 ECU.    181
 2417 +25.9  188  21  00    00   +30.5    7.0 ECU.   +0.0 ECU.    183
 2493 +25.5  191  22  00    00   +31.5    7.0 ECU.   +0.0 ECU.    209
 2523 +25.3  211  24  00    00   +28.4    8.0 ECU.   +0.0 ECU.    212
 2600 +25.3  224  25  00    00   +26.7    9.0 ECU.   +0.0 ECU.    225
 2651 +25.3  237  25  00    00   +27.7    9.0 ECU.   +0.0 ECU.    249
 2736 +25.3  264  26  00    00   +26.7   10.0 ECU.   +0.0 ECU.    269
 2829 +25.3  303  28  00    00   +25.6   11.0 ECU.   +0.0 ECU.    300
 2916 +25.3  344  30  00    00   +23.5   13.0 ECU.   +0.0 ECU.    349
 3011 +25.7  402  35  10    00   +20.8   15.0  +8.0  +0.0 ECU.    442
 3183 +25.5  570  46  10    00   +16.6   20.0  +7.4  +0.0  66.00  529
 3313 +25.5  574  46  10    00   +12.8   24.0  +7.0  +0.0  66.00  561
 3447 +25.7  677  43  10    00    +9.6   28.0  +7.0  +0.0  63.00  728
 3615 +25.5  690  39  10    00   +10.7   31.0  +7.0  +0.0 ECU.    620
 3800 +25.7  652  35  10    00   +12.7   29.0  +7.0  +0.0 ECU.    649
 3944 +25.3  629  35  10    00   +15.0   28.0  +7.0  +0.0 ECU.    644
 4084 +25.3  415  28  00    00   +21.7   16.0 ECU.   +0.0 ECU.    324
 3954 +25.3  338   6  00    00   +41.1    4.0 ECU.   +0.0 ECU.    139
 3699 +25.3   88   2  00    00   +38.0    5.0 ECU.   +0.0 ECU.    145
 3367 +25.5  261   2  00    00   +33.9    4.0 ECU.   +0.0 ECU.     48
 3060 +25.3   50   2  00    00   +40.9    3.0 ECU.   +0.0 ECU.     25
 2808 +25.5   64   2  00    00   +34.5    2.0 ECU.   +0.0 ECU.     28
 2705 +25.3   49   7  00    00   +27.5    2.0 ECU.   +0.0 ECU.     57
 2861 +25.3  116  15  00    00   +41.6    4.0 ECU.   +0.0 ECU.    120
 2873 +25.3  134  17  00    00   +42.6    5.0 ECU.   +0.0 ECU.    129
 2871 +25.3  177  18  00    00   +42.6    5.0 ECU.   +0.0 ECU.    170
 2868 +25.3  203  22  00    00   +36.6    7.0 ECU.   +0.0 ECU.    216
 2921 +25.3  239  25  00    00   +31.6    9.0 ECU.   +0.0 ECU.    244
 2931 +25.3  253  25  00    00   +29.6    9.0 ECU.   +0.0 ECU.    245
 2994 +25.5  287  27  00    00   +28.6   10.0 ECU.   +0.0 ECU.    306
 3035 +25.7  340  31  00    00   +25.7   12.0 ECU.   +0.0 ECU.    334
 3060 +25.9  370  31  00    00   +23.5   14.0 ECU.   +0.0 ECU.    377
 3138 +25.9  396  31  00    00   +21.5   14.0 ECU.   +0.0 ECU.    400
 3223 +25.9  424  31  00    00   +20.7   16.0 ECU.   +0.0 ECU.    420
 3261 +25.7  465  31  00    00   +20.8   17.0 ECU.   +0.0 ECU.    461
 3340 +25.5  508  32  00    00   +18.7   19.0 ECU.   +0.0 ECU.    526
 3429 +25.5  591  33  10    00   +16.6   22.0  +7.0  +0.0 ECU.    570
 3508 +25.5  618  35  10    00   +14.0   26.0  +7.0  +0.0 ECU.    641
 3595 +25.3  651  35  10    00   +12.8   27.0  +7.0  +0.0 ECU.    615
 3663 +25.3  638  35  10    00   +12.8   28.0  +7.0  +0.0 ECU.    617
 3766 +25.3  688  35  10    00   +13.8   29.0  +7.0  +0.0 ECU.    652
 3849 +25.3  685  36  10    00   +13.9   29.0  +7.0  +0.0 ECU.    686
 3930 +25.3  675  35  10    00   +13.9   30.0  +7.0  +0.0 ECU.    724
 4040 +25.3  683  35  10    00   +15.0   30.0  +7.0  +0.0 ECU.    683
 4095 +25.3  631  34  10    00   +16.7   28.0  +7.0  +0.0 ECU.    670
 4187 +25.1  630  33  10    00   +19.0   26.0  +7.0  +0.0 ECU.    588
 4208 +25.5  526  32  00    00   +21.1   25.0 ECU.   +0.0 ECU.    592
 4345 +25.3  574  32  00    00   +22.7   24.0 ECU.   +0.0 ECU.    588
 4420 +25.7  559  32  00    00   +21.8   24.0 ECU.   +0.0 ECU.    548
 4504 +25.7  624  33  10    00   +21.1   26.0  +7.9  +0.0 ECU.    644
 4535 +25.7  506  32  00    00   +21.7   25.0 ECU.   +0.0 ECU.    596
 4597 +25.7  563  32  00    00   +26.1   23.0 ECU.   +0.0 ECU.    573
 4662 +25.5  551  31  00    00   +26.1   23.0 ECU.   +0.0 ECU.    551
 4721 +25.5  557  31  00    00   +26.1   23.0 ECU.   +0.0 ECU.    568
 4768 +25.3  545  31  00    00   +26.1   23.0 ECU.   +0.0 ECU.    553
 4837 +25.3  540  31  00    00   +27.2   23.0 ECU.   +0.0 ECU.    533
 4887 +25.3  489  31  00    00   +27.1   22.0 ECU.   +0.0 ECU.    527
 4916 +25.3  483  30  00    00   +28.2   21.0 ECU.   +0.0 ECU.    444
 4823 +25.3  388  11  00    00   +32.2   17.0 ECU.   +0.0 ECU.    216
 4694 +25.5  116   2  00    00   +38.2    6.0 ECU.   +0.0 ECU.     39
 4317 +25.5  149   2  00    00   +35.9    4.0 ECU.   +0.0 ECU.     54
 4011 +25.5   22   1  00    00   +28.1    4.0 ECU.   +0.0 ECU.     30
 3703 +25.5   33   2  00    00   +21.0    4.0 ECU.   +0.0 ECU.     39
 3546 +25.5   50   1  00    00   +17.7    4.0 ECU.   +0.0 ECU.     54
 3542 +25.5   59   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     67
 3483 +25.5   67   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     60
 3468 +25.5   66   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     60
 3443 +25.5   61   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     60
 3422 +25.5   62   1  00    00   +21.5    4.0 ECU.   +0.0 ECU.     57
 3404 +25.5   62   1  00    00   +22.7    4.0 ECU.   +0.0 ECU.     59
 3401 +25.5   60   1  00    00   +21.5    4.0 ECU.   +0.0 ECU.     60
 3363 +25.5   57   1  00    00   +21.5    4.0 ECU.   +0.0 ECU.     57
 3353 +25.5   79   6  00    00   +30.7   10.0 ECU.   +0.0 ECU.    100
 3353 +25.3  105  15  00    00   +42.7    5.0 ECU.   +0.0 ECU.    112
 3387 +25.5  219  23  00    00   +41.7    9.0 ECU.   +0.0 ECU.    237
 3360 +25.5  320  30  00    00   +30.7   11.0 ECU.   +0.0 ECU.    327
 3336 +25.3  361  34  10    00   +27.9   14.0  +7.0  +0.0 ECU.    369
 3380 +25.5  436  35  10    00   +22.6   17.0  +7.0  +0.0 ECU.    492
 3401 +25.5  495  35  10    00   +19.9   19.0  +7.0  +0.0 ECU.    483
 3447 +25.3  594  35  10    00   +17.8   21.0  +7.0  +0.0 ECU.    556
 3483 +25.5  613  35  10    00   +15.0   25.0  +7.0  +0.0 ECU.    609
 3523 +25.3  595  35  10    00   +13.8   27.0  +7.0  +0.0 ECU.    631
 3572 +25.3  635  35  10    00   +14.0   27.0  +7.0  +0.0 ECU.    599
 3619 +25.5  641  35  10    00   +13.8   27.0  +7.0  +0.0 ECU.    641
 3671 +25.5  665  35  10    00   +13.9   27.0  +7.0  +0.0 ECU.    632
 3683 +25.5  594  35  10    00   +15.0   27.0  +7.0  +0.0 ECU.    637
 3667 +25.5 1567  18  00    00   +27.9    9.0 ECU.   +0.0 ECU.    603
 3783 +25.3   91   4  00    00   +31.9    4.0 ECU.   +0.0 ECU.    261
 3720 +25.1  140   2  00    00   +36.8    5.0 ECU.   +0.0 ECU.    119
 3691 +25.1   79   2  00    00   +34.7    5.0 ECU.   +0.0 ECU.     59
 3658 +25.1   61   2  00    00   +21.7    4.0 ECU.   +0.0 ECU.     31
 3631 +25.1   30   2  00    00   +17.7    4.0 ECU.   +0.0 ECU.     66
 3607 +25.3   43   2  00    00   +17.8    4.0 ECU.   +0.0 ECU.     48
 3584 +25.3   59   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     63
 3572 +25.3   62   2  00    00   +21.5    4.0 ECU.   +0.0 ECU.     63
 3546 +25.3   61   2  00    00   +21.7    4.0 ECU.   +0.0 ECU.     60
 3542 +25.3   63   1  00    00   +21.7    4.0 ECU.   +0.0 ECU.     59
 3512 +25.5   62   2  00    00   +21.6    4.0 ECU.   +0.0 ECU.     64
 3486 +25.5   64   1  00    00   +21.5    4.0 ECU.   +0.0 ECU.     66
 3472 +25.5   59   1  00    00   +21.5    4.0 ECU.   +0.0 ECU.     60
 3479 +25.5   59   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     62
 3439 +25.5   61   1  00    00   +21.5    4.0 ECU.   +0.0 ECU.     60
 3415 +25.5   59   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     61
 3401 +25.5   63   2  00    00   +22.6    4.0 ECU.   +0.0 ECU.     57
 3394 +25.5   60   2  00    00   +21.7    4.0 ECU.   +0.0 ECU.     61
 3367 +25.5   58   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     59
 3367 +25.5   57   1  00    00   +21.6    4.0 ECU.   +0.0 ECU.     57
 3323 +25.5   57   2  00    00   +21.6    4.0 ECU.   +0.0 ECU.     61
 3290 +25.3   59   1  00    00   +21.5    4.0 ECU.   +0.0 ECU.     61
 3284 +25.3   60   2  00    00   +22.6    4.0 ECU.   +0.0 ECU.     56
 3248 +25.5   59   2  00    00   +22.7    4.0 ECU.   +0.0 ECU.     58
 3208 +25.5   59   1  00    00   +22.6    4.0 ECU.   +0.0 ECU.     55
 3165 +25.5   57   2  00    00   +21.6    4.0 ECU.   +0.0 ECU.     56
 3126 +25.5   56   1  00    00   +22.6    4.0 ECU.   +0.0 ECU.     56
 3075 +25.5   57   1  00    00   +22.5    4.0 ECU.   +0.0 ECU.     52
 3019 +25.5   57   2  00    00   +22.5    4.0 ECU.   +0.0 ECU.     55
 2955 +25.5   51   1  00    00   +22.6    4.0 ECU.   +0.0 ECU.     54
 2911 +25.5   53   1  00    00   +21.3    4.0 ECU.   +0.0 ECU.     52
 2846 +25.5   53   2  00    00   +21.5    4.0 ECU.   +0.0 ECU.     49
 2789 +25.5   52   1  00    00   +20.8    4.0 ECU.   +0.0 ECU.     51
 2707 +25.5   49   1  00    00   +20.6    4.0 ECU.   +0.0 ECU.     50
 2666 +25.5   51   1  00    00   +19.7    4.0 ECU.   +0.0 ECU.     49
 2590 +25.5   52   2  00    00   +19.7    4.0 ECU.   +0.0 ECU.     47
 2527 +25.5   46   1  00    00   +18.6    4.0 ECU.   +0.0 ECU.     49
 2454 +25.5   46   2  00    00   +18.5    4.0 ECU.   +0.0 ECU.     46
 2392 +25.5   44   1  00    00   +18.5    4.0 ECU.   +0.0 ECU.     45
 2331 +25.5   42   1  00    00   +17.5    4.0 ECU.   +0.0 ECU.     41
 2273 +25.5   39   1  00    00   +17.4    4.0 ECU.   +0.0 ECU.     36
 2192 +25.5   37   1  00    00   +17.5    4.0 ECU.   +0.0 ECU.     37
 2153 +25.5   34   1  00    00   +16.3    4.0 ECU.   +0.0 ECU.     33
 2082 +25.3   31   1  00    00   +15.2    4.0 ECU.   +0.0 ECU.     31
 2015 +25.5   30   1  00    00   +15.2    4.0 ECU.   +0.0 ECU.     31
 1939 +25.5   32   1  00    00   +14.6    4.0 ECU.   +0.0 ECU.     31
 1869 +25.5   31   1  00    00   +13.5    4.0 ECU.   +0.0 ECU.     32
 1807 +25.5   30   1  00    00   +11.3    4.0 ECU.   +0.0 ECU.     30
 1715 +25.3   31   1  00    00   +10.3    4.0 ECU.   +0.0 ECU.     31
 1651 +25.3   31   1  00    00    +8.1    4.0 ECU.   +0.0 ECU.     32
 1460 +25.5   32   1  00    00    +6.3    4.0 ECU.   +0.0 ECU.     30
 1211 +25.3   31   1  00    00    +9.8    1.0 ECU.   +0.0 ECU.     31
  982 +25.5   30   1  00    00   +13.5    1.0 ECU.   +0.0 ECU.     30
  866 +25.5   29   1  00    00   +12.5    1.0 ECU.   +0.0 ECU.     30
  892 +25.5   29   1  00    00    +9.0    1.0 ECU.   +0.0 ECU.     29
  867 +25.5   30   1  00    00    +5.3    1.0 ECU.   +0.0 ECU.     31
  868 +25.5   29   1  00    00    +7.4    1.0 ECU.   +0.0 ECU.     29

Mar 28, 2004 | 05:28 PM

MalibuJack

EvoM Guru

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From: Royse City, TX

your getting the stumble because when it switches over from your stock ECU to the UTEC, the values between the two are slightly different (in my case its timing) if you look at your map, compare the ECU lines where your TPS Just transitions over from 30% or so.. I was told to try to adjust the map for the first load site so the timing and fuel is closer to what you see stock, this way it will transition smoother and won't be as noticable.. (Lower RPM's and low Load cells)

Mar 28, 2004 | 05:34 PM

#10

MalibuJack

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From: Royse City, TX

I've noticed that when you look at when you get stumbling, there's a significant difference in the ECU's desired timing, and the modified timing.. hence stumble.. I didn't see a dramatic change in MAF readings (modified vs stock) that could be interpretted as an interruption in the signal..

Mar 28, 2004 | 08:27 PM

#11

rraulston

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why does his MAP say 25.x and mine is 27.x??? Is that weird???

Mar 28, 2004 | 09:09 PM

#12

mick_the_ginge

Newbie

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"rraulston" Your knock events looks like you are running too much timing in that load zone. Looks like it starts here:

3982,+27.2,1028, 53, 10, 00, +6.8, 42.0, +8.0, +0.0,ECU. ,1207, 12.86

Notice that the ecu is only wanting to run 6.8 degrees timing. The look at the logs after that the UTEC timing stays at +8 but the ecu wants to run WAY less. Big sign that you are close to knock. Shame we can't see what boost you were running at that point. It's great that you have the WB, nice to be able to see AFR in the logs. Thats why I say your knock is timing created.

Remove some timing in those load zones.

Mar 28, 2004 | 09:16 PM

#13

mprtklr

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From: Temecula, Ca.

let me tell you about TPS reports....ok nevermind..

Mar 29, 2004 | 06:42 AM

#14

rraulston

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i have had no knock all along and now this partial load knock. I think when i topped off at a generic station yesterday might have somthing to do with it. Ill be purging the tank and trying again. Also was a hot day yesterday.

Mar 29, 2004 | 08:12 AM

#15

MalibuJack

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From: Royse City, TX

Possibly, but keep in mind that you were probably tuning for WOT runs and not logging continuously and watching for part throttle drivability and the load sites related to it..

Ok, let me try to clarify what I mean.. With your aftermarket exhaust, and (possibly if you have one) an aftermarket air filter, the turbo will hit peak boost at part throttle, in some cases needing slightly more fuel or a bit of timing adjustment that is in some conditions, significantly different than your WOT conditions..

Now that you have your WOT stuff dialed in, your going to have to adjust your drivability, you might want to adjust the boost to be a bit lower (18psi or so) to significantly lower at much lower TPS values (lower load sites) it has advantages in drivability and fuel mileage too..

Part throttle under boost means that you may find that the DV (BOV) may be in a partial state of being open, lowering the boost will help that at part throttle because it won't force the valve open as often when the boost drops (but doesn't quite fall into a vacuum state)