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Thread: Wideband tuning guide

  1. #1
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    Wideband tuning guide

    As the thread states, is there a wideband tuning write-up/guide out there that I'm not seeing??? I just installed the LC-1 and was wondering if the other "tuning guide" could still be followed. The reason I ask is bcuz people talk about having the pcm in open loop all the time with the wideband and I believe I recall seeing a post about the LTFT's not being relevant.
    And this question pertains to V6, supercharged if it matters.
    Last edited by 00GTP; 05-25-2006 at 07:15 AM.
    2000 GTP- S2X, diamond forged 9.5:1, balanced, Lucas 42.5#, GenV w/N*, stage 3 heads, custom PCM, ZZP SS IC, TOGS, MPS 3.0, Intensified 3.69's tranny - low 12's!!!!

  2. #2
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    most of what you've read is for ls1's...I use a custom histo that converts ltfts to a multiplyable % that I can multiply against my maf or ifr table to get my trims in line. Then use my wideband & a custom afr commanded vs. actual histogram to dial in wot fueling.
    It doesn't have to be perfect, it just needs to be done in two weeks...

    A wise man once said "google it"

  3. #3
    So there is no use of WB for tuning rather then WOT?
    is there the way to get Fuel Trims in line using WB?
    www.turbofirebird.com tuned with HPT MPVI Pro, LC-1.

  4. #4
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    Quote Originally Posted by iGoRa
    So there is no use of WB for tuning rather then WOT?
    is there the way to get Fuel Trims in line using WB?
    Just look at foffs post above. He uses the histograms to "dial in the lt's". You read the WB the same as you would the NB and adjust from there with maf or ifr.
    2000 GTP- S2X, diamond forged 9.5:1, balanced, Lucas 42.5#, GenV w/N*, stage 3 heads, custom PCM, ZZP SS IC, TOGS, MPS 3.0, Intensified 3.69's tranny - low 12's!!!!

  5. #5
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    Quote Originally Posted by foff667
    most of what you've read is for ls1's...I use a custom histo that converts ltfts to a multiplyable % that I can multiply against my maf or ifr table to get my trims in line. Then use my wideband & a custom afr commanded vs. actual histogram to dial in wot fueling.
    Could you share the custom histograms you use with us?

    Thanks

  6. #6
    please
    www.turbofirebird.com tuned with HPT MPVI Pro, LC-1.

  7. #7
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    Okay foff, are you gonna post up a wideband tuning guide??? C'mon man, I'm ready to utilize your expertise with the V6's
    2000 GTP- S2X, diamond forged 9.5:1, balanced, Lucas 42.5#, GenV w/N*, stage 3 heads, custom PCM, ZZP SS IC, TOGS, MPS 3.0, Intensified 3.69's tranny - low 12's!!!!

  8. #8
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    Quote Originally Posted by iGoRa
    1)So there is no use of WB for tuning rather then WOT?
    2) is there the way to get Fuel Trims in line using WB?
    im just an ameteur, so dont quote me

    1) no, you also use WB to make sure your stoichiometric (14.7:1) is right.
    2) i dont believe so, you just make sure youre running the right AFR with the WB, then you dial in the trims
    (#2 is over my head though)

  9. #9
    I think I just figured out how to dial VE Table with WB. Fuel trims went closer to 0 after MAF calibration.
    www.turbofirebird.com tuned with HPT MPVI Pro, LC-1.

  10. #10
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    of course they did