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Thread: Elevation Change

  1. #1

    Default Elevation Change

    Hello, I have an HP EFI application where the O2 correction is somewhat slow to respond IMO, when changing elevation (typically from about 2000' to 7000'). Is this typical? Also, is there a way to configure another table to enhance timing at higher elevations? Thanks!

  2. #2
    Join Date
    Nov 2014
    Location
    Ont. Canada
    Posts
    1,240

    Default

    Yes, create an Advanced timing table that Offsets timing by Baro pressure.

  3. #3
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,585

    Default

    If the Advanced menu icon (ICF) isn't already uploaded (added) to the top Toolbar, follow these instructions:
    (This same procedure applies to all the various Individual Configuration menu items.)
    The Advanced ICF function is an "Individual Configuration" of the Holley EFI software.
    At top of screen, Click "Toolbox" and "Add Individual Config".
    At top of new window, select "Individual Configuration Library".
    At bottom of new window, select "Holley EFI Advanced Config".
    Select "Advanced" and open "default.adv".
    The "Advanced ICF" icon will then be present at top of screen.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2700 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

  4. #4

    Default

    Thank you. How about the slow responding WBO2 correction when changing elevation? It's on the most aggressive setting, but still seems to take longer than I would like to correct.

  5. #5

    Default

    I would double check your correction limits.

  6. #6
    Join Date
    Dec 2009
    Location
    Connecticut
    Posts
    21,585

    Default

    He's referring to the Closed Loop/Learned Compensation Limits %.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: Dominator MPFI & DIS, A/C, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/X-pipe/shorty headers, 100HP progressive dry direct-port NOS, 160A 3G alternator, Optima Red battery, LenTech Strip Terminator wide-ratio AOD/2700 RPM converter, FRPP 3.31 gears, Cobra Trac-Lok differential, Moser 31 spline axles, '04 Cobra 4-disc brakes, '93 Cobra booster & M/C, 5-lug Bullitt wheels & 245/45R17 tires.

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