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  1. HHR Transmission (auto or manual) will never work...

    HHR Transmission (auto or manual) will never work on a 00-04' Grand AM.

    Transmission electronics between 3800 Grand Prix / Regal / Impala etc... are the same as with the Grand AM 3.4 V6....
  2. The 3400 has the same ECM parameters as the 3800....

    The 3400 has the same ECM parameters as the 3800. So I assume the tuning would be very similar.
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    Are you using the latest VCM version ??? My...

    Are you using the latest VCM version ???

    My daily driver 2018 Regal is not on the supported list. And I couldn't download the stock tune either till they released a couple more newer VCM...
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    As far as I know, 2.0 LTG cars with E80 / E80A...

    As far as I know, 2.0 LTG cars with E80 / E80A ECM's have wideband Oxygen sensor. which is great for tuning the fueling.

    You could lower the timing to see if the KR is real or false.

    utube...
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    Usually you have to re-calibrate (re-scale) the...

    Usually you have to re-calibrate (re-scale) the Mass Air Flow sensor calibration, .. according to the fuel trims.


    utube "HPTuners MAF tuning"

    Here is a good one...
    ...
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    Can you post your Factory tune as well ? 95916

    Can you post your Factory tune as well ?

    95916
  7. Engine / Spark / Advance / MPH vs gear 95795

    Engine / Spark / Advance / MPH vs gear

    95795
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    When you get on the throttle and get into the...

    When you get on the throttle and get into the power enrichment, the oscillating 02 will stop and hang above 750, The richer the higher mv it will show. But there is no way to decipher if 900 mv =...
  9. Look through the repository and check what others...

    Look through the repository and check what others have done.

    In reality you can set the first box from 40 to 42 and the last box at 43 to 45 and scale the boxes evenly between them.

    Having an...
  10. I tuned a handful of 3800 cars and the VE table...

    I tuned a handful of 3800 cars and the VE table only made a difference on my 98 Regal. All other cars were 2000+ and the VE tuning didn't matter.
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    I came across this video on how to diagnose 02's...

    I came across this video on how to diagnose 02's with lean or rich condition.

    I've not seen a better video explaining 02's and diagnosing lean/rich conditions.
    ...
  12. Are you in California ??? You don't want to...

    Are you in California ??? You don't want to mess with it cause you will not pass state emissions. If your not in California, check with your emission regulations if you need to have the exhaust...
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    That's a real puppy ! But not mine. I'd be...

    That's a real puppy !
    But not mine.

    I'd be afraid to loose it or step on it.

    It's a big bowl with big treats. But the puppy is really small.

    :cool:

    The idea behind this picture is to...
  14. Charge the battery well and try to flash a stock...

    Charge the battery well and try to flash a stock file.

    I would get a stock file from the repository just in case something is corrupted with yours.
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    If you don't have a vacuum leak it could be a bad...

    If you don't have a vacuum leak it could be a bad upstream 02.
    I've seen this when the upstream O2 was bad. Kept telling the ECM the mixture was rich when in fact it was perfect. So the ECM kept...
  16. OK thanks for the update. I had weird hick up...

    OK thanks for the update.

    I had weird hick up happen years ago. Under full throttle a couple seconds into the pull the AFRC went back to 14.7 !!!. Good thing that motor was great at keeping KR...
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    I wouldn't change any of the -negative numbers. ...

    I wouldn't change any of the -negative numbers.

    Those numbers are either engine torque demand or axle torque demand.

    If you change the 0 % / 2% and 4 % accelerator position rows to (for...
  18. I never even used to log both banks when I had...

    I never even used to log both banks when I had 3800's. I wouldn't worry at all.
  19. Most of the time when a car goes into a limp...

    Most of the time when a car goes into a limp mode, it gets OBD codes which can be helpful to narrow down the issue.

    I had limp mode happen only 2 times on 2 different cars and both times it was...
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    There is no spoofing the rear 02 to show it's OK...

    There is no spoofing the rear 02 to show it's OK when it's not OK.

    Like fella above said, you have to install the rear 02 after the cat and do a couple drive cycles for it to complete the check.
    ...
  21. Stock... Probably around .850 on the narrowband....

    Stock...
    Probably around .850 on the narrowband.
    13 to 12.7 AFR Command in first gear, then after shifting into second gear, it might go all the way down to 11.6 afr-command. Don't be surprised if...
  22. OK cool I'm glad to hear all is good :) Any...

    OK cool I'm glad to hear all is good
    :)

    Any other questions, don't hesitate to ask or PM me.
    I miss the 3800 cars I've owned. 3800 cars are wrench monkey heaven !!!

    If you want the trans...
  23. Monitor Fuel trims and spark Knock Retard. ...

    Monitor Fuel trims and spark Knock Retard.

    Chances are the air fuel ratio when cruising is way off, causing the missfire. Or the spark timing might be off.

    Also the fuel trims might be off...
  24. 6,500 rpm is a hairr passed the power band. car...

    6,500 rpm is a hairr passed the power band. car should run quicker when shifting at between 6,000 and 6,200 rpm,... unless you have a different camshaft.
  25. Your fuel cut-off is set to 6,400 rpm Also...

    Your fuel cut-off is set to 6,400 rpm

    Also your trans shift scheduling / part throttle 1-2 gear your 75% to 100% is at 46 / 47 mph... i'd lower it to 45.
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