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Thread: Datalogging

  1. #11
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    Quote Originally Posted by 81 TransAm View Post
    You could use your RPM to turn the datalogger on. For example, if you're used a setting of 4000 RPM to turn the datalogger on, it would turn on in the burn out box and record the whole pass & drive back down the return lane.
    I usually suggest the transbrake or the 2-Step as the activation. This way it catches your launch as well guaranteed. Also, *most* automatic transmissions with a Transbrake, the transbrake only works in 1st gear, so you can use it as an activation for other things; if you just need to test from a roll while going down the road as long as you aren't in 1st gear. The exception is a TH400 with a Griner valve body, which allows transbrake in 2nd gear for higher horsepower cars on marginal tracks.
    Last edited by S2H; 02-23-2017 at 10:00 AM.
    -Scott
    Don't forget to check out progress on my Race Car:
    Project Blasphemy - 8.07 @ 171
    Low 8 Second Street Car

  2. #12
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    Quote Originally Posted by S2H View Post
    I usually suggest the transbrake or the 2-Step as the activation.
    Yep, that's what I've done in the past, so it doesn't record every time I'm at WOT.
    However, when I was initially tuning, I did trigger the datalogger by TPS above 99%.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, 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.

  3. #13

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    Thanks for the tip! I just switched my ECU Log Trigger from a manual switch to my transbrake/2-Step hot wire.

  4. #14
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    When the datalog is activated by the transbrake, does it start logging exactly at the activation point, or is there a buffer that allows you see data a couple of seconds before?
    Scottie
    Turbo LS Mustang
    8.71 @ 156.79

  5. #15
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    How would it know that you're getting ready to push the transbrake button??? (Meaning this "buffer" you're talking about.) It will activate when you press the button, and it starts recording IMMEDIATELY. And depending on how you have it setup, it can record only while the switch is active, or it can record for a predetermined amount of time (you want this option when it's a momentary switch or a sensor activated trigger of some sort).
    -Scott
    Don't forget to check out progress on my Race Car:
    Project Blasphemy - 8.07 @ 171
    Low 8 Second Street Car

  6. #16
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    Quote Originally Posted by Scottie-GNZ View Post
    When the datalog is activated by the transbrake, does it start logging exactly at the activation point,...
    Yes, of course. The ECU isn't recording all the time, only when you activate the datalogger.
    http://forums.holley.com/showthread....s-amp-Datalogs (Datalog & System Log Information - Read "NOTES")

    Quote Originally Posted by S2H View Post
    And depending on how you have it setup, it can record only while the switch is active, or it can record for a predetermined amount of time (you want this option when it's a momentary switch or a sensor activated trigger of some sort).
    • Choosing "Immediate" (Setup ECU Logging) means the Data Logger will activate when the switch is pressed.
    You don't need the switch for the "Triggered" type of activation, but the ECU input criteria must be selected.
    IF you choose to install a Data Logger switch, it must also be activated for a "Triggered" type datalog to record.
    Pressing the switch ("Triggered" type setup), only enables the Data Logger; the ECU input criteria activates it.

    Immediate vs Triggered Start Methods
    With “Immediate” & “Triggered” start methods and an option to use the ECU Log Trig Input, there are actually four combinations.
    We will address these separately:

    * Immediate Start Method with no ECU Log Trig – This combination results in logging as soon as the ECU is powered up and it
    continues going until the ECU powers down or you hit the “Max Log Time.” If you hit the max time, then the ECU wraps up the file and
    immediately starts a new one. If you want to log all of the time (including uneventful key-on time if the engine is not running) this one is
    for you. It would be advisable to set the “Logging Rate” rate very low or you will fill up the storage space in short order, and set the “Max
    Log Time” very high to avoid lots of little files.

    * Immediate Start Method with ECU Log Trig – This combination results in starting the log based exclusively on the ECU Log Trig
    input. That is pretty simple. The length of the log will be a function of the kind of switch you use and what you enter for “Max Log Time.”
    If you are using a momentary switch, it is pretty simple. The momentary ECU Log Trig Input starts the log, and the length of the log is
    set by the “Max Log Time.”
    It essentially ignores the switch input until it finishes the log. If you are using a toggle switch, the log will go at
    least for the time specified in the “Max Log Time”, but will continue beyond this time if the switch is still active.
    Beyond this time as soon
    as the switch is turned off the log stops. So really for this combination, the “Max Log Time” is actually specifies the minimum log time.

    * Triggered Start Method with no ECU Log Trig – This combination is useful if you know you always want to record data at a certain
    condition without having to worry about a switch. You can specify what condition will trigger the start of the log (like TPS>50,
    RPM>3000, or MAP>110 for instance) and then the log simply goes for the time you specify in the “Max Log Time.” Meeting the trigger
    conditions again during the log will not prolong the log, but of course meeting the trigger conditions again after a log is finished will start
    a new log. Many people choose to setup the trigger conditions based on things you would see at the burnout for instance and then set
    the log time long enough to capture the run.

    * Triggered Start Method with ECU Log Trig – This combination is the strictest in that you have to have the ECU Log Trig input active
    in combination with meeting the trigger condition based on the variable and threshold you selected. BOTH must be active at the same
    time for the logging to start. While you can do this with a momentary switch input, you have to be confident that the trigger condition will
    be met at the time you hit the switch. It might make more sense to use a toggle switch for the ECU Log Trig input when using this
    combination. After being triggered the log will run for at least the length of time set in the log time, and will continue to run so long as the
    ECU Log Trig input is active. What you do not have to do is select “ECU Log Trig” as the trigger input. That is already taken care of as a
    predefined system input and can actually cause confusion and problems if you use it as a trigger condition as well.

    Creating a Switched Input for the Internal Logger – A switched input can be created for the internal logger (+12V or Ground). Its
    function is described in the start methods above. It's created by selecting the System Parameters ICF & Basic I/O – Datalog. Select
    the "Enable Input for Internal ECU Log" to create this input.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, 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.

  7. #17
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    Thanks guys.
    Scottie
    Turbo LS Mustang
    8.71 @ 156.79

  8. #18

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    On a X275 car I tune, we start the datalog at 80% throttle. It gets the first few moments of the 2-Step and then the entire run.
    If you have crew members that help stage the car, you can also put a switch on the back of the car to start the datalog.
    Having done it both ways, we personally found the TPS route to be the most effective for our needs.
    Log time is kept to a minimum, unless you want the burnout & time in staging.

  9. #19
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    There is a way to trigger the Internal (ECU) Datalogger with a pushbutton switch or by TPS % (or 2-Step, Transbrake, etc.).
    This dual trigger Internal Datalogger task does not involve the "Enable Input For Internal ECU Log" in Basic I/O, Datalog tab (System ICF).
    Step #1: Create a custom Input (Inputs/Outputs ICF) for the pushbutton switch; you can name it "Datalog Switch" and Pin Map it.
    Install & wire a pushbutton switch in an inconspicuous location; it can be ground activated, so it's an easy one wire task.
    Step #2: Create a custom Output (Inputs/Outputs ICF) for the TPS % based trigger; you can name it "Datalog Trigger".
    (This is just an EFI software based Output and isn't physically wired. However, you'll still Pin Map it to avoid
    the warning message when exiting the EFI software: "Some I/O not mapped, do you want to continue?")
    Step #3: Configure the custom "Datalog Trigger" Output parameters. Select "Datalog Switch" as the Switched Input Trigger to activate
    when Enabled. Select TPS as the Sensor Input Trigger to activate Above 99% (or whatever you want it to be). Select "OR" condition.
    Step #4: In Setup ECU Logging (Datalog tab - top Toolbar), select Triggered as the Start Method, and "Datalog Trigger"
    (the custom created Output) as the Trigger Input, Greater Than zero (0 = off, 1 = on). Task complete. See switch options below.

    --------------------------------------------------------------------------------------------------------------------------

    FYI: If you already have a pushbutton switch, and the "Enable Input For Internal ECU Log" in Basic I/O, Datalog tab (System ICF)
    wired & Pin Mapped, this will require no new physical wiring changes (only EFI software changes). Simply Pin Map the new
    "Datalog Switch" Input to the same pin it's been on, uncheck the "Enable Input For Internal ECU Log" in Basic I/O (System ICF), and
    program the four steps in the EFI software as stated in the above paragraph. If you already have this pushbutton switch installed,
    but want/need it to gain a custom Input (Inputs/Outputs ICF) instead, read the next paragraph below pertaining to a Virtual Switch.

    TIP: If you have a Digital Dash and prefer to use a touchscreen Virtual Switch instead of a wired pushbutton switch, this entire dual
    trigger Internal Datalogger task can be accomplished without any physical wiring at all. The touchscreen Virtual Switch created for
    Step #1, will be Pin Mapped to one of the Switches in the "View LCD" screen. It can be named "Datalog TS Switch" in the custom
    Input. In Step #3 (custom Output parameters), select "Datalog TS Switch" as the Switched Input Trigger to activate when Enabled.
    Simply tap the Virtual Switch again for momentary use. Both switch type options are outlined in red & blue print in post #16 above.
    This dual trigger Internal Datalogger task requires one Input & one Output (custom Inputs/Outputs ICF). However, with a touchscreen
    Virtual Switch, they're both software based I/O. Even an HP EFI user will appreciate this, since it doesn't consume any Inputs/Outputs.

    NOTE: If the I/O 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 icons/items.)
    The "I/O" 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 Inputs/Outputs Config".
    Select "I/O" and open "Base Config - Blank.io".
    The "I/O" icon will then be present at top of screen.
    May God's grace bless you in the Lord Jesus Christ.
    '92 Ford Mustang GT: 385" SBF, Dart SHP 8.2 block, TFS TW 11R 205 heads, 11.8:1 comp, TFS R-Series intake, Dominator MPFI & DIS, 36-1 crank trigger/1x cam sync, 160A 3G alternator, Optima Red battery, A/C, 100HP progressive dry direct-port NOS, Spal dual 12" fans/3-core Frostbite aluminum radiator, Pypes dual 2.5" exhaust/off-road X-pipe/shorty headers, S&W subframe connectors, LenTech Strip Terminator wide-ratio AOD/2800 RPM converter, M4602G aluminum driveshaft, 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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