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Thread: PE enabled, but not activating (0411 8322)

  1. #16
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    Last edited by LRT; 05-24-2021 at 11:38 PM.

  2. #17
    Fuel Injected! woody80z28's Avatar
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    Gotcha. Thanks. Looks like I was editing my post when you added yours. That's the exact kind of thing I was envisioning to get around a PE issue.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1) sold! for crazy money...but I miss it
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    96 Beretta "T56" - 4.8 LS RWD swap / 6spd (0411/2156)
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)
    https://www.youtube.com/c/GEARHEADdezign

  3. #18
    Fuel Injected! woody80z28's Avatar
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    Great success!

    I modified the LRT bin to also disable the MAF and mistakenly flashed the non-modified one. AFR was low 14s. So I looked at it and realized what happened, flashed a MAFless copy and AFRs were in the low 12s. My ~19-20sec "dyno" pull only took 16sec! That's a definite improvement.

    So I know I need to do some MAF scaling. Very excited though...cause now I know I can make changes and see results.

    Thanks to everyone who helped out. I would not have figured this out on my own.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1) sold! for crazy money...but I miss it
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    96 Beretta "T56" - 4.8 LS RWD swap / 6spd (0411/2156)
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)
    https://www.youtube.com/c/GEARHEADdezign

  4. #19
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    Last edited by LRT; 05-24-2021 at 11:38 PM.

  5. #20
    Fuel Injected! woody80z28's Avatar
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    Thank you. All input is appreciated.

    We're "essential" so even though NY is mostly closed, I gotta go to work. But we're on 4 days right now cause orders are slow. And today is beautiful! So I just got back from a drive.

    Tires: yes, I went from stock 245s to 265s. What's the TOS? EDit: nvm. Trans output shaft speed.

    Fans: That old bin is from when I was setting up my fans. My operating temp was only hitting mid 160s, so I set them there just to be sure the harness worked. It's set to 192 now. I actually replaced the tstat with a 180, thinking the previous owner may have put a 160 in, but it didn't change the operating temp. Warmer days now have put my operating temp in the mid 170s, but my gauge is always about 185...even when the datalog and my handheld read 160. Strange. I don't see an added bypass anywhere.

    Spark: I made those the same to simplify tuning like my obd1 Beretta. Maybe that's not ideal.

    I just logged another bin where I reactivated the MAF after adding 10%to the g/sec chart. That put my wideband in the mid 14s at WOT. I'll make the fan changes, etc and try yours, too. Edit: Looks like you added more than 10%. Which is needed.

    I'm working with Kur4o to get a decent solution to datalog with TunerPro and the obdlink. We're adding KR logging, but that showing 1.5deg the whole time, so something needs adjusting. That whole deal has been a challenge, too.

    Going to flash and test it now.
    Last edited by woody80z28; 03-26-2020 at 11:16 PM. Reason: Looked at BIN
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1) sold! for crazy money...but I miss it
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    96 Beretta "T56" - 4.8 LS RWD swap / 6spd (0411/2156)
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)
    https://www.youtube.com/c/GEARHEADdezign

  6. #21
    Fuel Injected! woody80z28's Avatar
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    Hmmm. I tried that bin out and it gave an MIL (P1336 Crankshaft Position System Variation). It was noticeably less responsive. But it had to have entered PE (13.4 at WOT) with the open loop table set at stoich up top.

    I put the last tune in just to be sure it wasn't a sensor problem and the MIL went away and the throttle response came back.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1) sold! for crazy money...but I miss it
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    96 Beretta "T56" - 4.8 LS RWD swap / 6spd (0411/2156)
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)
    https://www.youtube.com/c/GEARHEADdezign

  7. #22
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    Last edited by LRT; 05-24-2021 at 11:39 PM.

  8. #23
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    I am almost sure that the case relearn data is stored at the eeprom region of the bin 4000-8000 area, which can be overwritten only in clone mode. Under normal programming it shouldn`t be updated. Maybe the error is caused by some other settings that affect this DTC.

    LRT you have lots experience with the ls1 code. It is completely off topic but have you managed to figure out the routine that sends data via the ALDL bus on the ls1 pcm. I am trying to find it and make a hack that will enable the pcm to stream custom data via aldl for logging essential data. I looked at a lot of dissasemblies but I am not even close to figuring this out.

    Confirming the PE mode can be done by looking at the stoich target the pcm use. If it is stuck at 14.7 all the time, than there is indeed no PE enabled.

  9. #24
    Fuel Injected! woody80z28's Avatar
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    Quick lunch break reply, I'll come back later.

    I did a full clone flash with your bin, because I also added kur4o's aldl patch. I can try it again without the patch if you'd like.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1) sold! for crazy money...but I miss it
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    96 Beretta "T56" - 4.8 LS RWD swap / 6spd (0411/2156)
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)
    https://www.youtube.com/c/GEARHEADdezign

  10. #25
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    For the patch to work only OS+cal data is needed.

    edit:
    Once the OS is flashed with the patch, than only CALdata writes are needed.

    So if you want to try the LRT bin, there is no need to repatch since the OS is the same and you need only caldata write.
    Clone is used only if you have a junkyard pcm and you want to make a mirror image of it, so all the learned stuff and vin is the same between the 2 pcms.
    Last edited by kur4o; 03-27-2020 at 08:59 PM.

  11. #26
    Fuel Injected! woody80z28's Avatar
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    Ok. Your one post in the other thread mentioned full flash and another said OS, so I just did a clone to be sure. I have two PCMs I'm swapping and hadn't patched the other one yet... that's how that all worked out the way it did. But I can clone back to my native BIN and then write the OS from your patch and caldata from there on out.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1) sold! for crazy money...but I miss it
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    96 Beretta "T56" - 4.8 LS RWD swap / 6spd (0411/2156)
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)
    https://www.youtube.com/c/GEARHEADdezign

  12. #27
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    Last edited by LRT; 05-24-2021 at 11:39 PM.

  13. #28
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    The big tuning companies are missing some basic stuff in their definitions. They never put enough time to figure more than just the basics. Tons of parameters are not defined yet. As per the example for the PE on.

    If I managed to find the aldl datastream code, high speed logging one of these PCMs will real fun.

    Could it be a table for PE to be set at 14.7 and even it enters PE the AFr is at stoich all the time.


    But I can clone back to my native BIN and then write the OS from your patch and caldata from there on out.
    You can clone it back with the patch applied. Than caldata write only from there.

    It is really unclear for a lot of people how this clone OS and caldata work. There definitely needs to be some guide written about that.

  14. #29
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    Last edited by LRT; 05-24-2021 at 11:39 PM.

  15. #30
    Fuel Injected! woody80z28's Avatar
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    Hopefully we can figure this out together. It'd be nice to help discover information rather than just consume it.
    80 Camaro Z28 - 550hp AFR 383 / T56 6spd (Holley HP EFI)
    91 Beretta "SS" - 260hp 3400 MPFI / HM282 5spd (7730/$A1) sold! for crazy money...but I miss it
    94 Silverado Z71 - 300hp Vortec 357 TBI / NV4500 5spd (7427/$0D) gone but not forgotten
    96 Beretta "T56" - 4.8 LS RWD swap / 6spd (0411/2156)
    01 Silverado 2500HD - stock Vortec 8.1 / ZF6 6spd (0411/8322)
    https://www.youtube.com/c/GEARHEADdezign

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