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    It might not be necessary to use a VSS. When the...

    It might not be necessary to use a VSS. When the tuning has challenges, adding a VSS is a good plan. There are several parameters that use VSS information, like DFCO.

    dave w
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    The gearhead-efi OBD2 .bin files are here:...

    The gearhead-efi OBD2 .bin files are here: http://www.gearhead-efi.com/Fuel-Injection/forumdisplay.php?32-OBDII-Tuning

    Sharing stock files is encouraged. Publicly sharing modified files on...
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    The 2002 Camaro flash has fan parameters. dave...

    The 2002 Camaro flash has fan parameters.

    dave w
  4. Powder Coated**Vortec 7.4 / 454 Intake Manifold 1996 - 2000

    $675 - Free Shipping to the Lower 48 States. Please send a Private Message (PM) for shipping quotes outside the Lower 48 States or with questions.

    Includes:
    Upper Plenum
    Lower Plenum
    Throttle...
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    There will be opinions about "Is it worth the...

    There will be opinions about "Is it worth the effort" and "Will it run efficiently on just a MAP input".

    It's not a plug-n-play conversion, above average electronic and above average mechanical...
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    The 7.4 Vortec (1996 - 1999) can be converted to...

    The 7.4 Vortec (1996 - 1999) can be converted to '6395 MPFI without MAF (Speed Density - the exact same way 1990 - 1992 TPI systems are). See attached .zip for additional information.

    Basically...
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    FFFF failed. Would I need to clone the exact...

    FFFF failed.

    Would I need to clone the exact same .ctz as a .bin for LS Droid to recover the PCM?

    I rely heavily on the TunerCats OB2, and have not ventured into the LS Droid system.

    At...
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    Long story short: I'm having a Security Key...

    Long story short: I'm having a Security Key problem with my EFI Live Licensed "Mule" '0411.

    The attached EFI Live .ctz might be helpful? My plan to flash the "Mule" with a .ctz then read back as...
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    Usually above 2% TPS% and/or above 2 MPH will set...

    Usually above 2% TPS% and/or above 2 MPH will set the idle flag off.

    The exported data log will show if the Idle Flag is on / off.


    dave w
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    The initial post did not mention the L31. The...

    The initial post did not mention the L31. The overwhelming number of gearhead-efi OBD2 posts are about 5.3 liters (LM7 / L59), which did not have manual transmissions from the factory.

    The L31...
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    So, I want to understand what kind of flash is...

    So, I want to understand what kind of flash is needed? 5.3 Manual?

    I was successful starting with a 4.8 Manual Flash and "Hand Picking" 5.3 engine parameters into the 4.8 Flash. The "Hand...
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    Most members would agree, when cruising, AFR's...

    Most members would agree, when cruising, AFR's ranging between 14.2 to 15.2 are good. AFR's going above 15.5 are lean. Warning: Prolonged AFR's above 16.2 will eventually damage the engine.
    ...
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    http://www.gearhead-efi.com/Fuel-Injection/showthr...

    http://www.gearhead-efi.com/Fuel-Injection/showthread.php?1513-2002-TunerPro-Bin-Files
    Post #9
    Post #11
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    Factory OS 2156 was either a 4.8 manual or 6.0...

    Factory OS 2156 was either a 4.8 manual or 6.0 manual, not 5.3 manual.

    dave w
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    Usually spark changes of 1 or 2 degrees will...

    Usually spark changes of 1 or 2 degrees will change the knock retard averages. It can be challenging to reduce knock retard, because increasing or decreasing Spark Advance will affect knock retard...
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    I wonder what would happen if the vacuum line was...

    I wonder what would happen if the vacuum line was disconnected from the fuel pressure regulator? Would anything change with the ARF's at different RPM's?

    dave w
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    I suppose there is the option to set the injector...

    I suppose there is the option to set the injector flow rate to 3.00 or lower to see what happens. The odd thing is, setting the injector flow rate lower than the factory specification on the factory...
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    I agree 100% with you steveo, 2% wouldn't be...

    I agree 100% with you steveo, 2% wouldn't be causing 20% errors.

    Now, I have to wonder what fuel pressure regulator is being used, return-less or vacuum referenced? The injector flow rate for a...
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    according to the injector calculator I'm using:...

    according to the injector calculator I'm using:
    3.125 g/sec = 24.8 lb/hr
    3.1797 g/sec = 25.2 lb/hr

    Injector base pulse width (BPW) is calculated using injector flow. Increasing the injector...
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    The 12212156 OS is a good foundation to build on....

    The 12212156 OS is a good foundation to build on.

    There are two types of injectors used on the 5.3 Liter, with very different injector parameters programmed into the flash, see pictures in the...
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    I'm wondering if the injector programming is...

    I'm wondering if the injector programming is correct?

    dave w

    15770

    15771
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    Do the IAC steps look normal. Are the TPS volts...

    Do the IAC steps look normal. Are the TPS volts normal?

    dave w
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    According to RockAuto: 1996 5.7 Camaro -...

    According to RockAuto:

    1996 5.7 Camaro - 16214399

    1994 5.7 Camaro - 16188051

    Additional Information: http://lt1swap.com/all_lt1.htm

    dave w
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    The 299 chip Will Not work in the '7747. Are...

    The 299 chip Will Not work in the '7747.

    Are you able to data log the '7747? There might be useful idle troubleshooting information in the data log, like TPS volts and IAC steps.

    dave w
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    On most operating systems, when the MAF is set to...

    On most operating systems, when the MAF is set to 1Hz the low octane table is default. Try copy / paste high octane tables into low octane tables.

    dave w
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