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  1. Replies
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    But to Eric's point where he asked about moving...

    But to Eric's point where he asked about moving all of the error attribution to just one table, it's far easier to shift that to VE by disabling the MAT calculation.
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    Hell naw! I still want the "Tuned with Matlab"...

    Hell naw! I still want the "Tuned with Matlab" sticker on my car! :D
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    If you want to do that, you can save yourself a...

    If you want to do that, you can save yourself a lot of heartache by disabling the complex modeling for temp and just let the ECM use IAT for its TEMP value.
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    One of the other factors that tends to get...

    One of the other factors that tends to get ignored is inherent noise in the system. The sensors are as precise as the OEM is willing to spend for, but there is still noise in the system that can and...
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    Yeah. I was under the impression that MAT was...

    Yeah. I was under the impression that MAT was calculated by the different between IAT and ECT and some BIAS table. Is that not the case?
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    GenIII requests

    Manifold Absolute Temperature (MAT)
    GMVE and/or equivalent
  7. Cool. Then I'll look at the log and see what...

    Cool. Then I'll look at the log and see what cells it's in and check that there isn't a vast difference in timing between the cells.

    I hope to have a chance this weekend in work no the throttle...
  8. That begs the question, is letting the car pull...

    That begs the question, is letting the car pull itself under it's own power considered idling or driving? That is where I think I'm confused as to which table to look in. If it's considered idling...
  9. I don't know if you looked at my tune or the...

    I don't know if you looked at my tune or the surge log I posted, but in that log the timing is up and down quite a bit. I'm not sure where that portion of the timing is controlled, since I've got...
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    Yeah, you'll want to make sure that you reduce...

    Yeah, you'll want to make sure that you reduce timing on both of your timing tables.
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    That does look like the timing retard table. ...

    That does look like the timing retard table.

    In order to be sure, though, you can check the config of that histogram and make sure that under "Plot value" that it's showing "Timing Retard" for the...
  12. Sorry, forgot to mention that. It's a 2002 Z06,...

    Sorry, forgot to mention that. It's a 2002 Z06, so manual trans.

    I noticed on the surge log, that the timing is sweeping up and down pretty radically. The car idles like a champ at 950, and the...
  13. EC_Tune, Russ, or any of you other idle geniuses...

    EC_Tune, Russ, or any of you other idle geniuses feel free to chime in and tell me where I need to look first.
  14. Bump. No opinions?

    Bump.

    No opinions?
  15. I'm not sure if you've cleared the learned fuel...

    I'm not sure if you've cleared the learned fuel trims or not, but that's something else you may need to do as I think the ECM will remember them even if you've got them disabled.
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    Open up Editor and go to Engine --> Fuel Control...

    Open up Editor and go to Engine --> Fuel Control --> OL & CL

    Check the Closed Loop Enable ECT vs. IAT table to see if the values are anything other than 284.

    Also check that LTFT Enable option...
  17. Questions about surging, intermittent idle hang.

    I'll get the engine out of the way first.

    Stock bottom end, stock cubic inch LS6
    AFR 225 @ 60cc
    240/244 .598/.605 112+4
    Ported FAST92/95mm throttle body
    Kooks 1.875" headers, x-pipe

    I did...
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    Are you running a custom SD OS, or did you just...

    Are you running a custom SD OS, or did you just set the MAF fail frequency and disable the codes?

    Either way, if the MAF is removed and you're still getting corrections, those must be coming from...
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    Better than not doing it all, I suppose. ...

    Better than not doing it all, I suppose.

    ...however, not doing it and doing it half-assed will get you about the same results! :D

    I agree. From my personal experience, when I was going my...
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    I think that EC_Tune has posted some of this...

    I think that EC_Tune has posted some of this configs in the sticky that already have the filters for discarding the PE results from your scan if you don't want to go through the trouble of putting...
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    Thanks for setting me straight, Bill. I dunno...

    Thanks for setting me straight, Bill. I dunno where I came up with the notion of them being different. I guess I'll have to flush that incorrect piece of information. :D
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    I hope I didn't muddy the waters with my post,...

    I hope I didn't muddy the waters with my post, Tony.

    I don't know where I came up with the notion that PE is done differently on the 99+ vs. the 97-98 ECMs.
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    Based on what he posted from the help file, it...

    Based on what he posted from the help file, it reads like the PE EQ ratio vs. RPM tables is used for 99+ ECMs. Specifically, he's done an LS1 swap into a gen3 T/A with a 98 engine/ECM. I think it's...
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    Don't hold me to this, but I think that if the...

    Don't hold me to this, but I think that if the closed loop enable vs. ECT table is set to stock, then your STFT are going to be correcting. However, I know there is a setting that allows you to...
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    P0101 is a MAF fail code. I don't think that...

    P0101 is a MAF fail code. I don't think that anything idle related would cause that code to be set.

    I'd check the MAF wiring and make sure that it's all good, and that you have a good connection...
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