Hesitation when I go WOT
Hesitation when I go WOT
I have spent hours tring to figure out why I get hestiation when I go WOT. No matter what I do my car hesitates when I floor it. When I select Map0 my car runs fine. I have logged about 15 minutes of driving using my conservative methanol map. Someone please take a look and let me know if something is odd. I am starting to think my UTEC unit may be defective... BTW I get the hestiation even with the StageI and StageII maps provided by UTEC. In the following logs I can no longer go past around 5k at WOT on Map0 because of the stock fuel cut.
Someone please help!!!
EDIT: 2 of log files had the wrong names.
Someone please help!!!
EDIT: 2 of log files had the wrong names.
Last edited by joeymia; Sep 14, 2005 at 11:47 PM.
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Joined: Apr 2005
Posts: 50
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From: Maryland
In my 05 i have the same problem, it was tuned by Turbo XS and they said the cars computer is pulling back boost when it realizes somthing is wrong. Dyno chart looks like i failed a lie detector test. not sure if its the same hesitation that your talkin about, could be a timing problem?
What program are you using to open the logs? They look fine in excel. The logs were generated with MPS UTEC Logger using a LM1 Wideband.
I am starting to think that something may be wrong with my unit. I have tried so many different things and I still get hesitation. It seems to happen right when UTEC takes control of the AFR/Timing. Like I would be cruising with the TPS at 10% and right when I get around 35% (I think thats when Open Loop starts) the car hesitates like I am getting a fuel cut. Even if slowly accelerate I get the hesitation. I have emailed TurboXS but have not received a response. I guess tomorrow I give them a call. BTW the car runs fine using map0!!! The only problem with map0 is with all the mods I have if i go WOT i hit fuel cut around 5.5k rpm.
I am starting to think that something may be wrong with my unit. I have tried so many different things and I still get hesitation. It seems to happen right when UTEC takes control of the AFR/Timing. Like I would be cruising with the TPS at 10% and right when I get around 35% (I think thats when Open Loop starts) the car hesitates like I am getting a fuel cut. Even if slowly accelerate I get the hesitation. I have emailed TurboXS but have not received a response. I guess tomorrow I give them a call. BTW the car runs fine using map0!!! The only problem with map0 is with all the mods I have if i go WOT i hit fuel cut around 5.5k rpm.
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Oh and when I first got UTEC about a month ago I tried using their staged maps. They would do the same damn thing!! I kept on using map0 so I could log and I was not really ready to mess with tuning the thing myself at that time.
OK The logs look fine? Why hasn't anyone else chimed in on your logs? Because they make no sense. I would love to help but I can not decifer what I am looking at. And yes I am opening them in excel.
Originally Posted by joeymia
What program are you using to open the logs? They look fine in excel. The logs were generated with MPS UTEC Logger using a LM1 Wideband.
I am starting to think that something may be wrong with my unit. I have tried so many different things and I still get hesitation. It seems to happen right when UTEC takes control of the AFR/Timing. Like I would be cruising with the TPS at 10% and right when I get around 35% (I think thats when Open Loop starts) the car hesitates like I am getting a fuel cut. Even if slowly accelerate I get the hesitation. I have emailed TurboXS but have not received a response. I guess tomorrow I give them a call. BTW the car runs fine using map0!!! The only problem with map0 is with all the mods I have if i go WOT i hit fuel cut around 5.5k rpm.
I am starting to think that something may be wrong with my unit. I have tried so many different things and I still get hesitation. It seems to happen right when UTEC takes control of the AFR/Timing. Like I would be cruising with the TPS at 10% and right when I get around 35% (I think thats when Open Loop starts) the car hesitates like I am getting a fuel cut. Even if slowly accelerate I get the hesitation. I have emailed TurboXS but have not received a response. I guess tomorrow I give them a call. BTW the car runs fine using map0!!! The only problem with map0 is with all the mods I have if i go WOT i hit fuel cut around 5.5k rpm.
I know this is going to sound stupid, but try re-gapping your spark plug a little smaller. If the gap is to wide the force of the high pressure air coming into the combustion chamber will acually "blow out" the spark sometimes. It may fix the problem. If not you didn't waste alot of time or effort on it... and it could be as simple as that.
Ya know what.. I just noticed you have a meth kit.. It sounds like it may be kicking in at a particular boost level and quenching ignition for a moment.. Also like the previous post said, check your plug gap, though a misfire would be evident around 5000rpm as a stumble..
I noticed that everytime UTEC takes control over timing from the stock ECU my car seems to hesitate. Feels like a misfire... Has anyone encountered something like this before? I have the AFR at the same exact levels as the stock when the transition from the stock ECU and UTEC takes place so I have no idea what else it could be. Here is the timing from my map:
I called TurboXS on friday and they told me to just reflash my UTEC which I did. Any other thoughts?
Code:
Timing Map [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [17.2] [15.2] [13.2] [12.2] [10.7] [10.7] [10.7] [10.7] [10.7] [10.7] [-100] [16.8] [13.8] [11.8] [10.8] [9.3] [9.3] [9.3] [9.3] [9.3] [9.3] [-100] [15.8] [12.8] [10.8] [9.8] [8.3] [8.3] [8.3] [8.3] [8.3] [8.3] [-100] [14.8] [11.8] [9.8] [8.8] [7.3] [7.3] [7.3] [7.3] [7.3] [7.3] [-100] [14.8] [11.8] [9.8] [8.8] [7.3] [7.3] [7.3] [7.3] [7.3] [7.3] [-100] [14.8] [12.8] [10.8] [9.8] [8.3] [8.3] [8.3] [8.3] [8.3] [8.3] [-100] [14.8] [12.8] [10.8] [9.8] [8.3] [8.3] [8.3] [8.3] [8.3] [8.3] [-100] [13.8] [11.8] [9.8] [8.8] [7.3] [7.3] [7.3] [7.3] [7.3] [7.3] [-100] [12.8] [10.8] [8.8] [7.8] [6.3] [6.3] [6.3] [6.3] [6.3] [6.3] [-100] [12.8] [9.8] [8.8] [7.8] [6.3] [6.3] [5.8] [5.8] [5.8] [5.8] [-100] [12.6] [9.6] [8.6] [7.6] [6.1] [5.7] [4.9] [4.9] [4.9] [4.9] [-100] [13.1] [11.1] [10.1] [9.1] [7.6] [7.1] [5.8] [5.8] [5.8] [5.8] [-100] [13.2] [11.2] [10.2] [9.2] [7.7] [7.2] [6.2] [6.2] [6.2] [6.2] [-100] [12.5] [10.5] [9.5] [8.5] [7] [7] [6.3] [6.3] [6.3] [6.3] [-100] [12.7] [10.7] [9.7] [8.7] [7.2] [7.2] [7.2] [7.2] [7.2] [7.2] [-100] [9] [7.5] [7.5] [7.5] [7.5] [7.5] [7.5] [7.5] [7.5] [7.5] [-100] [9.7] [8.2] [8.2] [8.2] [8.2] [8.2] [8.2] [8.2] [8.2] [8.2] [-100] [9.8] [9.9] [10] [10] [10.1] [10.2] [10.3] [10.3] [10.4] [10.5] [-100] [11.7] [11.7] [11.6] [11.6] [11.5] [11.5] [11.4] [11.4] [11.3] [11.3] [-100] [12.3] [12.4] [12.5] [12.5] [12.6] [12.7] [12.8] [12.8] [12.9] [13] [-100] [13.9] [14.1] [14.4] [14.6] [14.8] [15.1] [15.3] [15.5] [15.8] [16] [-100] [15.7] [16] [16.2] [16.5] [16.7] [17] [17.2] [17.5] [17.7] [18] [-100] [16.2] [16.6] [17] [17.5] [17.9] [18.3] [18.7] [19.2] [19.6] [20] [-100] [16.5] [17] [17.5] [18] [18.5] [19] [19.5] [20] [20.5] [21] [-100] [17.6] [18] [18.4] [18.7] [19.1] [19.5] [19.9] [20.2] [20.6] [21] [-100] [17.8] [18.3] [18.7] [19.2] [19.7] [20.1] [20.6] [21.1] [21.5] [22] [-100] [18.5] [18.5] [18.5] [18.5] [18.5] [18.5] [18.5] [18.5] [18.5] [18.5] [-100] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [-100] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [-100] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [-100] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [-100] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [20.8] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100] [-100]
Yes, I usually get around it by setting the 10% column to ECU and removing some of the timing cells and setting them to ECU at lower RPM, then I log the transition and see what the timing is where it hiccups, and smooth the timing between what the ECU wants and the UTEC uses..
Originally Posted by MalibuJack
Yes, I usually get around it by setting the 10% column to ECU and removing some of the timing cells and setting them to ECU at lower RPM, then I log the transition and see what the timing is where it hiccups, and smooth the timing between what the ECU wants and the UTEC uses..
Well I was logging since I got a new actuator. I wanted to know what you guys think of my tuning progress. This is my everyday street map. This pull was done on 4th gear all the way up to the redline. Ignore the boost taper I am working on getting that fixed 
Code:
RPM PSI MAF TPS Load Knock AFR Ing Timing Mod Maf 2262 1.8 321 100 10 0 11.8 13.5 ECU. 280 2284 2.3 325 100 10 0 11.6 13.8 ECU. 273 2302 2.7 332 100 10 0 11.6 14.2 ECU. 369 2344 3 346 100 10 0 11.7 14.7 ECU. 299 2375 3.4 348 100 10 0 11.8 15.1 ECU. 374 2422 3.5 362 100 10 0 11.8 15.4 ECU. 356 2469 3.7 376 100 10 0 11.8 15.7 ECU. 337 2495 3.9 376 100 10 0 11.9 16.4 ECU. 388 2538 4 389 100 10 0 11.9 16.9 ECU. 427 2575 4.2 401 100 10 0 11.9 17.7 ECU. 403 2624 4.4 437 100 10 0 11.9 18.3 ECU. 346 2645 4.7 431 100 10 0 11.8 19.4 ECU. 478 2712 4.9 455 100 10 0 11.7 19.6 ECU. 523 2730 5.2 466 100 10 0 12 20.5 ECU. 497 2780 5.5 514 100 10 0 11.9 21.5 14.5 509 2832 6 519 100 10 0 11.8 22.7 14.4 457 2873 6.4 554 100 10 0 11.7 23.6 14.3 456 2955 6.9 576 100 10 0 11.8 24.4 14.2 708 3019 7.2 631 100 10 0 11.9 25.7 14.1 735 3063 7.7 662 100 10 0 12 27.5 14 769 3095 8.4 664 100 10 0 12 28.6 13.9 580 3162 9.1 694 100 10 0 12.1 30.6 13.8 584 3229 9.6 777 100 10 0 12.2 33.6 13.7 889 3290 10.4 811 100 10 0 12 35.2 13.5 819 3367 11.2 871 100 20 0 11.9 37.5 10.6 976 3436 12.1 917 100 20 0 11.9 40.2 10.4 936 3505 13.1 990 100 30 0 12 44.1 9.1 1141 3584 13.9 1061 100 30 0 12 52.2 9 1012 3663 14.9 1131 100 40 0 10.4 55.3 7.7 1256 3741 16 1170 100 40 0 10.6 57.7 7.7 1126 3813 17 1282 100 50 0 10.7 60.2 6.4 1282 3907 18 1326 100 50 0 10.5 65.8 7 1152 3982 19 1449 100 60 0 10.5 67.9 6.9 1533 4074 19.8 1404 100 60 0 10.5 69.8 7.1 1366 4145 20.5 1557 100 70 0 10.4 72.7 6.9 1623 4235 21 1587 100 70 0 10.3 70.3 6.9 1736 4345 21.2 1519 100 80 0 10.6 70.6 10.1 1497 4432 21.3 1529 100 80 0 10.7 70.8 10.5 1633 4516 21.3 1587 100 80 0 10.8 72.1 10.7 1644 4604 21.2 1612 100 80 0 10.6 74.4 11 1644 4694 21 1607 100 80 0 10.5 74.2 11.4 1552 4748 20.8 1639 100 90 0 10.6 74 12 1712 4852 20.7 1661 100 90 0 10.6 75.9 12.4 1655 4930 20.3 1666 100 90 0 10.5 75.5 12.6 1623 5035 20.2 1677 100 90 0 10.5 79.6 13 1677 5128 20 1718 100 90 0 10.5 77.7 13.2 1655 5184 19.6 1712 100 100 0 10.6 79.3 14.1 1748 5265 19.5 1748 100 100 0 10.5 79.3 14.4 1773 5341 19.3 1773 100 100 0 10.6 76.6 14.7 1712 5420 19.1 1818 100 100 0 10.8 78.8 15.1 1824 5500 19 1831 100 100 0 10.8 78.6 15.5 1677 5574 18.8 1805 100 100 0 10.8 78.4 15.7 1773 5649 18.5 1831 100 100 0 10.8 79.3 16 1798 5727 18.3 1838 96 100 0 10.8 79.6 16.4 1689 5787 18 1858 81 100 0 10.7 80.1 16.6 1773 5858 17.8 1865 70 100 0 10.8 79.3 16.8 1748 5931 17.6 1901 88 100 0 10.9 80.4 17.2 1785 6016 17.6 1872 65 100 0 10.8 79.8 17.5 1785 6060 17.5 1893 68 100 0 10.9 80.1 17.9 1798 6127 17.3 1937 94 100 0 10.9 81.5 18.4 1724 6207 17.1 1930 100 100 0 10.9 80.8 18.5 1785 6277 17.1 1945 100 100 0 10.8 81.7 19.1 1851 6337 17 1992 100 100 0 10.8 81.9 19.3 1908 6397 16.8 1953 100 100 0 10.9 81.6 19.5 1748 6447 16.6 1945 100 100 0 10.9 81.7 19.8 1851 6510 16.5 1953 100 100 0 10.9 82.4 20 1893 6574 16.1 1960 100 100 0 10.9 81.7 20 1824 6626 16 1976 100 100 0 10.9 82 20.1 1838 6680 15.8 1953 100 100 0 10.9 81.6 20.1 1865 6734 15.6 1953 100 100 0 10.9 81.8 20.1 1811 6761 15.4 1968 100 100 0 10.9 81.2 20.2 1838 6844 15.3 1960 100 100 0 10.9 82 20.2 1893 6901 15.1 1960 100 100 0 10.9 81.7 20.3 1893 6944 14.9 2000 100 100 0 10.9 82.9 20.3 1879 6988 14.9 1976 100 100 0 10.8 82.8 20.3 1798 7032 14.8 2000 100 100 0 10.7 84 20.4 1811 7077 14.8 1992 100 100 0 10.8 84 20.4 1785 7122 14.8 2016 100 100 0 10.7 83.9 20.5 1851 7168 14.6 1992 100 100 0 10.7 85.1 20.5 1851 7230 14.6 2016 100 100 0 10.7 85.2 20.5 1879 7278 14.6 2032 100 100 0 10.8 84.8 20.7 1838 7293 14.4 2040 100 100 0 10.7 84.8 21 1908 7342 14.4 2024 100 100 0 10.7 84.5 21.1 1851 7407 14.3 2040 100 100 0 10.7 85 21.3 1879 7423 14.3 2049 100 100 0 10.7 85.7 21.4 1893 7457 14.3 2032 100 100 0 10.7 85.1 21.7 1879 7490 14.3 2066 100 100 0 10.7 86.1 21.7 1923 7490 14.3 434 76 100 0 10.7 16.3 21.1 181