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Thread: Sound like a bad WB02. Driving me crazy

  1. #1
    Lifetime Member Chalky's Avatar
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    Default Sound like a bad WB02. Driving me crazy

    Since installing new LS2 TB and ported FAST90, my tune has gone crazy.

    I do a BEN Map and it calls for more fuel as an example an average cell value of 1.06. I make the adjustments, do another BEN Map and results are similar calling for similar additions to VE table. Right now my idle cell in VE Table is over 70 and table almost looks flat on top.

    If i go out run car in OL, WB02 is within one point of CFOL but never gets an closer. If car idles, wb02 goes lean to tune of about 19:1.

    Any comments/suggestions?

    FWIW, WB02 is new but I did have trouble getting it to click.
    2007 Silver Z06

  2. #2
    Lifetime Member mr.prick's Avatar
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    crazy lean/rich spikes are a sign of a bad wideband sensor.

  3. #3
    Lifetime Member Bruce Melton's Avatar
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    Come to Warren's on SAT and you can use my WB and EFI to eliminate that possibility.

    Bruce

    2000 C5 Coupe, 6M, Callies/Mahle stroked LS7 (441), Blackwing, Halltech, LS3 intake, 90mm Shaner TB, ported L92 heads, FAST 50# inj, not too much cam, Kooks 1 7/8" headers , 3" catless mid pipes, Z TIs, track suspension, , 3:90 rear, EFI V2, LM-2, etc.
    PowrMax Performance

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    LM-2 EFILIve package with TAQ -sLM2 V-2 serial cable> Package deals

  4. #4
    Lifetime Member Chalky's Avatar
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    Quote Originally Posted by Bruce Melton
    Come to Warren's on SAT and you can use my WB and EFI to eliminate that possibility.

    Bruce
    Sounds like fun. I'm afraid I might buy something.
    2007 Silver Z06

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