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Type: Posts; User: alextzi

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  1. Need help with injector EOIT/ boundary when using ethanol blend and bigger cam

    Thanks in advance for any help.

    Gen3 PCM but with 416 cubic inch LS3 stroker swap, I have issues with idling, bad fuel smell, and more importantly bad cam surge under 2000 RPM.
    Motor is 12.8...
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    41,454

    Same problem here. Now when I log, standard items...

    Same problem here. Now when I log, standard items such as injector duty cycle, O2 sensor voltages, and others do not display/information does not get collected. I know these worked before.
    I have...
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    9,487

    I just updated my software suite (I have MPV1)...

    I just updated my software suite (I have MPV1) and logged data, but many parameters not logged/missing such as injector duty cycle and oxygen sensor voltages. Stuff that is standard, but now missing....
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    97,350

    Any chance we can do the abs module bleed...

    Any chance we can do the abs module bleed procedure, now that would be awesome
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    1,429

    PE equiv. table override?

    If I accidentally set the PE table equivalence ratio table to say 1.00 instead of something richer, will the PCM override this during PE mode with the open loop equivalence table value if the open...
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    5
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    5,014

    AFR for E10 and wideband O2

    Ok, so I set Stoich to 14.2

    Tuned VE, no problem, using 1.0 in the open loop equivalence ratio table

    in the PE table, set the equivalence ratio to 1.13 (which 1/1.13 is a lambda of .885).
    ...
  7. What PCM are you using, if it is an LS3 PCM that...

    What PCM are you using, if it is an LS3 PCM that has a LS3 card style MAF data programmed into it, it wont run with an 03 older style MAF, the frequency curves are way different.

    Try running in...
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    2
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    1,738

    I had previously turned off DFCO, should I turn...

    I had previously turned off DFCO, should I turn it on and play with the ramp rate?
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    1,738

    Lightweight Clutch excessive engine braking

    So I have a lightweight racing clutch in my 02 Z, and some aero on the rear of the car.

    When coming off the throttle (coasting a little), I get a lot of engine braking/deceleration due to the...
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    4,786

    What should one be looking for in terms of car...

    What should one be looking for in terms of car behavior with the throttle follower airflow?
  11. Replies
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    The base running airflow and throttle follower...

    The base running airflow and throttle follower airflow were increased likely due to my lightweight clutch/flywheel and U/D pulley (car is 02 Z06).

    I am going to run RUSS K config and adjust base...
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    4,786

    ok, no responses. Can I ask a simple question: ...

    ok, no responses. Can I ask a simple question:

    Why would anyone increase the throttle follower airflow table?

    Thanks
    Alex
  13. Replies
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    4,786

    Throttle follower airflow

    This applies more for electronically controlled throttle bodies, but can anyone give more detail what the "throttle follower airflow" table does (the hptuners help is only of modest help here).
    ...
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    2,982

    Welll, PLX has a sensor that does just that (has...

    Welll, PLX has a sensor that does just that (has a narrowband 0-1V output and a 0-5 volt wideband output),

    I was looking for folks who actually used them and would recommend them....I dont want...
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    2,982

    Wideband with Narrowband emulation

    I would like to hear recommendations for WB O2 sensors that can be used in place of the stock front O2 sensor and provide narrowband output, and at the same time be able to hook up HPT to the...
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    3,218

    I can verify that Dsteck's stock file completely...

    I can verify that Dsteck's stock file completely matches up with my Stock 2002 C5 Z06
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    16
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    9,250

    Let's suppose that LTFT adjustments are used in...

    Let's suppose that LTFT adjustments are used in PE mode, but LTFT is not updated while in PE.

    It seems like for stockish Gen III PCMs, if the LTFT boundaries are set to under 77 kPa or no updates...
  18. Replies
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    9,250

    So I got one vote for Fuel Trims can add/subtract...

    So I got one vote for Fuel Trims can add/subtract fuel under Power Enrichment Mode, and one vote for they dont.

    Anybody want to be a tie breaker?
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    LTFT and WOT question

    Hopefully this isn't too dumb of a question....


    Under normal circumstances, when you go to WOT and enter power enrichment mode (WOT), do LTFTs get used for fueling adjustment?

    Thanks in...
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    19,248

    What is your injector duty cycle when the pinging...

    What is your injector duty cycle when the pinging happens?

    If it shoots up near/past 100% then it might be the pump not having enough.

    I calculate that the Stock pump for E85 will maybe support...
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    You might be getting pre-ignition, and not...

    You might be getting pre-ignition, and not detonation.

    this is typical of E85.

    You may actually need to go one step colder on the plugs like TR7, because a glowing ground strap on a plug can...
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