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  1. 2005 Silverado Traction Control Light After COS3

    Did a COS3 on a 05 Silverado. Now Traction Control Light is on. Assuming this is on due to the MAF being disabled.
    Any fix?
  2. Looking for a 2007 6.2 Yukon TVS1900 Tune

    Does anyone have the Magnuson TVS1900 tune file for a 2007 or 2008 Yukon?
    Thanks
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    As far as fuel trims I replaced the week old o2's...

    As far as fuel trims I replaced the week old o2's with new ones. Fuel trims turned right on.
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    The truck diagram shows the two pins doing...

    The truck diagram shows the two pins doing different things but after looking at the truck and camaro diagrams figured out that both pins could take a ground. Decided to share the same ground from...
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    Figured it out. 02 Camaro tune only requires one...

    Figured it out. 02 Camaro tune only requires one ground to see park and neutral, where as the truck OS requires two (pin 32 and pin 34). That is why I would see park/neutral in one OS and not the...
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    Also you'll see in the photo that I'm running...

    Also you'll see in the photo that I'm running both the gm and jeep computers. Thats so I could retain cruise control, air bag function and full gauge cluster
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    I did not. So would explain why i thought it...

    I did not. So would explain why i thought it wasnt MAF or MAP related.
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    Same engine in the same jeep. I will attach one...

    Same engine in the same jeep. I will attach one better. As for fuel pressure it is 45 non ref.
    Here is the final tune.
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    Update, after thinking about failing the MAF by...

    Update, after thinking about failing the MAF by setting the fail number to 1HZ I tried unplugging the MAF all together. After that the engine stopped doing its lean and rich idle. So that says the...
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    Very true, I originally had the other 4 tables...

    Very true, I originally had the other 4 tables changed for the 50# injectors but in a attempt to get back to a stock tune as possible i change almost everything i could back to stock to see if it was...
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    Now fuel trims wont turn back on.

    Now fuel trims wont turn back on.
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    Stupid ass Iphone. Cant get the photo up right...

    Stupid ass Iphone. Cant get the photo up right sorry
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    Here is a picture of the bay. The Rad and Fan are...

    Here is a picture of the bay. The Rad and Fan are offset to the passenger side and the filter is in the driver side corner. I also tried in speed density with the MAF disabled (c2901 set the fail in...
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    Battery voltage stays at 13.5. Fuel pressure also...

    Battery voltage stays at 13.5. Fuel pressure also stays steady. Pressure is low because I'm using the stock jeep internal regulator. Injectors data came from the truck that the injectors did. They...
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    Rich Idle with fan running lean with out

    As the title says engine runs rich with cooling fans on, when they switch off it goes super lean. Tried SD with MAF disable and no change. Turned on short terms and it corrects for each scenario. You...
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    I believe that is correct. I looked for a COS for...

    I believe that is correct. I looked for a COS for the 06 and couldn't find one. Now when I have more time Ill look for the 05 COS and hope to go SD.
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    So it seems we are SOL on a 06 OS that has a...

    So it seems we are SOL on a 06 OS that has a 4l80. What we decided to do was to take a 2005 OS that had a 4l80e segment available and transfer every file one by one with the two tunes open side by...
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    2006 Sierra 4l80e OS needed. OS 12619623

    Doing a 4l80 swap on a 06 sierra. Looking for a 4l80e segment swap.
    Any help would be great.
    Here is the tune file
    Thanks
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    When tuning it on VE only the MAP stops at 103,...

    When tuning it on VE only the MAP stops at 103, so i tried to get it as close as possible with out exceeding 105. I am assuming that when in boost the MAP stops at 103kpa and the metter keeps going...
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    Found it! MAF Test c2911 was too low causing the...

    Found it! MAF Test c2911 was too low causing the computer to force it back to the 1 bar MAP sensor
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    Also frame 400 and 910

    Also frame 400 and 910
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    Frame 300

    Frame 300
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    2003 Silverado Going lean?

    Tuning my 2003 2500 6.0l with a non intercooled Whipple at about 5 lbs. Tuning was going fine until I saw a horrible lean spot around 2200-2600 rpm at about half throttle. The commanded AFR is...
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    I do not have WO2EQR1 I Have Lambda Not EQ Ratio

    I do not have WO2EQR1
    I Have Lambda Not EQ Ratio
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    That is what I'm saying. it is commanding 13 but...

    That is what I'm saying. it is commanding 13 but doing 17. So changing a0008 will only lower the commanded but wont fix the actual afr right? Also note in the stock OS it did the same thing and the...
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