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Thread: Commander 950 Software Disks

  1. #1
    Join Date
    Jun 2014
    Location
    Arvada, Colorado
    Posts
    2

    Default Commander 950 Software Disks

    Hi, my name is Mike. I have been running the Holley 4DI fuel injection for about a year now, but now I'm installing a Commander 950. My question is, which software should I buy and why, the 534-191 or the 534-144. Thanks, Mike.

  2. #2
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    15,586

    Default

    Holley 534-191 Commander 950 Pro Software Upgrade is what you need.
    This includes a certificate for sending your C950 ECU to Holley for the firmware update.
    The firmware in your C950 ECU can only be updated by sending the ECU to Holley.

    IF you don't already have a WBO2 sensor kit, just purchase Holley's 534-197 WBO2 sensor kit.
    It contains the ECU firmware update certificate, and the C950 software is a free download (below).

    Absolutely use the latest ECU firmware!
    The newest software & firmware will operate a narrowband or wideband O2 sensor.
    I highly suggest Holley's own 534-197 WBO2 sensor kit; it's "plug & play" with the C950 harness.

    You can download the latest C950 software, the C950 manual and all the base maps here:
    http://www.holley.com/TechService/Li...#FuelInjection (Scroll down to "Commander 950")
    The wideband O2 base maps are already loaded in the EFI software (C:CMDR950 folder).

    Click on the About & Version tab (key-on) to find your current software & firmware versions.
    Your C950 software version must be compatible with your C950 firmware version:
    1.xx software = 1.xx firmware
    2.xx software = 2.xx firmware
    3.xx software = 3.xx firmware
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  3. #3
    Join Date
    Jun 2014
    Location
    Arvada, Colorado
    Posts
    2

    Default

    Thank you for your input. How can I tell which firmware I have now?

  4. #4
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    15,586

    Default

    Quote Originally Posted by Ratt man View Post
    Thank you for your input. How can I tell which firmware I have now?
    Read the last paragraph of post #2.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

  5. #5

    Default

    Hello Friends, name is Todd, nice to meet you! Pulling out the '53 Studebaker equipped with a 350 Chevy tuned port and read the above post. It has the 950 Commander 950 and would like to upgrade to the wideband O2 sensor. Does Holley still offer the software upgrade?

  6. #6
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    15,586

    Default

    Quote Originally Posted by Bulldog View Post
    Does Holley still offer the software upgrade?
    Contact Holley Tech Service (LINK). It's not available online.
    May God's grace bless you in the Lord Jesus Christ.

    '78 BRONCO: 508" stroker, TFS heads, 11:1 comp ratio, Dominator MPFI & DIS, cold air induction, Spal dual 12" fans/aluminum radiator, dual 3" exhaust/Magnaflow mufflers, Moroso vacuum pump, Accusump, engine oil & trans fluid coolers, 100HP progressive dry direct-port NOS, A/C, LenTech Strip Terminator wide-ratio AOD/2500 RPM converter, 3:1 Atlas II, modified Dana 44/60-lockers-4.10s, hydroboost/4-disc brakes, ram-assist/heim joint steering, Cage long radius arms, traction bars, 4" Skyjacker lift, 35" mud tires

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