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Thread: LS6 944 Misfire

  1. #31
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    Quote Originally Posted by joecar View Post
    ( BTW: in your tune, B3618 PE table is set to EQR 0.86 which is incorrect... set it to EQR 1.175 (i.e. 1/0.85) )

    Changed properties to display EQ Ratio and set B3618 to 0.85

  2. #32
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    Quote Originally Posted by joecar View Post
    This log show idling at Lambda 0.982 (AFR 14.4).



    Let's compare current tune to that one...
    Yes. The short log represents the pre Vet tune. The car ran rich after applying the Calc Vet results but I did not log that run. I immediatly went back to the old tune.

  3. #33
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    Quote Originally Posted by joecar View Post
    I think statesman is inferring that your front NBO2's are switching slower than usual (about 1.5/s vs 3/s)...
    Ok, does this mean there is a problem with the O2s? or is this a configuration issue?


    Two months ago, I was getting P0133 and P0153. I switched out my front O2s for bosch 13111 and the problem went away.

  4. #34
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    Quote Originally Posted by joecar View Post
    I think statesman is inferring that your front NBO2's are switching slower than usual (about 1.5/s vs 3/s)...
    No, I just didn't word it very well. You don't actually 'need' to be in open loop, you can do closed loop tuning with fuel trims BUT the LTFTs work in blocks... so it's not a very precise way to tune. I should have said that you 'should' tune in open loop because it's more precise.

  5. #35
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    Quote Originally Posted by pormgb View Post
    Changed properties to display EQ Ratio and set B3618 to 0.85
    NO!.... joecar said "set it to EQR 1.175".

  6. #36
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    Quote Originally Posted by statesman View Post
    NO!.... joecar said "set it to EQR 1.175".
    OK, changed back display properties back to AFR. If I set all fields 1.75 they default to 1.80. Is that normal?

  7. #37
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    Quote Originally Posted by statesman View Post
    No, I just didn't word it very well. You don't actually 'need' to be in open loop, you can do closed loop tuning with fuel trims BUT the LTFTs work in blocks... so it's not a very precise way to tune. I should have said that you 'should' tune in open loop because it's more precise.
    Just to be clear, Calc VET should block LTFTs. Since I'm running Calc VET with a WBOS, why do you think after applying VET results the car ran so bad?

  8. #38
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    Quote Originally Posted by pormgb View Post
    OK, changed back display properties back to AFR.
    Why did you do that?

  9. #39
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    Quote Originally Posted by pormgb View Post
    why do you think after applying VET results the car ran so bad?
    Because you're not following instructions. Joecar told you to set table B3618 to EQR 1.175 and you set it to 0.85 and when I pointed out that joecar said you should set it to EQR 1.175 and you change display properties back to AFR. If you can't follow one simple instruction like that, who knows what you've done with setting up your Calc VET.

  10. #40
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    Quote Originally Posted by pormgb View Post
    OK, changed back display properties back to AFR. If I set all fields 1.75 they default to 1.80. Is that normal?
    Be careful... EQR 1.175.

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