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Thread: help please Wrangler swap 2007 Gen4 6.2L 6L80

  1. #1

    help please Wrangler swap 2007 Gen4 6.2L 6L80

    I am trying to adjust my MAF after setting up my math and Histograms, my reading are very high, in the beginning I thought my readings were off because my IAT would creep up to 140 ish, now that I have resolved that issue, still reading in the 40% lean range, attached is 2 log files, the short one is from this morning at 80 degrees/ 95% RH, from idle to 1200RMPS the long file is driving around to and on the interstate, if i add 1.15 then start and quick log it doesn't change the values very much, if at all. Yesterday I added 1.15 to the MAF low table until I was in the 20% range at start up, she would barely idle surging and was puffing black smoke. If its lean how can this be ?
    Attached Files Attached Files
    Last edited by david@3379894300.com; 5 Days Ago at 09:39 AM. Reason: adding attachment

  2. #2
    Can you post a calibration file too?

  3. #3
    Advanced Tuner
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    Your stock O2 sensors indicate a rich condition. The wideband indicates that it's lean. I'd trust the stock sensors in this case. Doublecheck your wideband. Is it in good condition? Where is it installed? Is the wideband math correct in your scanner?

  4. #4
    File added

  5. #5
    the wide band is new AEM 030-310 installed in 5th bung position, custom Hooks long tube headers with cats , as far as the Math I'm almost certain it is correct

  6. #6
    Advanced Tuner
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    Quote Originally Posted by david@3379894300.com View Post
    File added
    Your MAF curve is WAY higher than stock. Is it in a larger than stock Air tube?
    The IAT calibration has been modified as well. Is that what you did to fix the high IAT reading?

  7. #7
    no sir, I added a intake air box, the inlet air tube is RPM Extreem 4.5" one 90 and one 45 degree with MAF in between the 90&45
    Last edited by david@3379894300.com; 5 Days Ago at 09:55 AM.

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  9. #9
    Senior Tuner Lakegoat's Avatar
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    I would turn on the STFT's and tune the low speed stuff with them until you get the wideband figured out. At this point, you have no idea what the fuel mixture is when you go wot.
    2005 GTO, TrickFlow 225, Magnuson 2300, 4L80, 4 link 8.8
    2013 Silverado 5.3, 6L80