How to configure dyno for use.


Almost everything needed for configuring a dyno can be found in the “Make Run Config” screen. The button to access this dialog is found in the Dyno Control app’s Home ribbon tab. It can also be accessed by pressing ctrl+e when Dyno Control is focused.

Run File Info:

This is the first tab shown when entering the Make Run Config screen, this allows you to set a new vehicle’s make, model, year, and customer info. These will affect run file attributes that can be referenced later, and will automatically create a directory structure to keep files organized. You will also set a title, notes, and file name for your run. In addition you can check the box to disable automatic opening of new runs in Data Center. All of these settings can be changed after a run is made.

Dyno Configuration:

Setting related to a dyno’s behavior during a run can be found in the Dyno Configuration tab. Here you can do the following:

  1. “Enable Speed Differential Warning”: This setting is for 4wd dynos, it warns the user if the speed difference between the two drums is higher than a set amount.
  2. “Enable Tire Speed Warning”: This setting warns the user if the dyno speed is higher than a set amount.
  3. “Enable Speed Balancing”: This setting is for 4wd dynos with load control, this keeps the speed on dyno drums close by using the load control to slow the faster drum.
  4. “Turn off Load Control when run starts”. This is for using load control to hold the dyno at a set point, starting sampling will disable load control and start the run.
  5. “End sampling when brake is pressed”. This setting allows 1 button ending of dyno runs by automatically ending the run when the brake is pressed.
  6. “Automatically Start/Stop run”: Based on the following settings allows a run to be automatically started at a minimum set point and ended at a different set point without pressing any buttons.
    1. “Engine Speed” or “Speed”: Sets the source for starting or stopping the run.
    2. “Start Value”: Sets the point where the run will start.
    3. “Stop Value”: Sets the point where the run will be stopped.
  7. “Tie drum sources together”: For dynos 4wd dynos with load control on both drums, this setting allows eligible load control sources (torque, or brake percent) to be set separately for both drums.
  8. “Source”: Sets the load control source.
  9. “Max Value”: Sets the maximum value you can set for load control on the selected source.
  10. “+/- Value”: Sets the step value for using the pendant, keyboard, or up/down arrows on the ribbon to increment load control.

RPM Configuration:

In the RPM Configuration tab there are settings that affect how the dyno reads RPM from the vehicle.

  1. “RPM Source”: The method the dyno uses to read RPM.
    1. Inductive 1 or 2: The inductive inputs on the dyno, for using with a clip over wire style inductive sensor.
    2. Digital 1 or 2: The digital inputs, for using with digital input devices (like an optical sensor).
    3. OBD2: for use with the Dynojet OBD2 device connected to the dyno by CAN.
    4. Power Commander 5: For use with a Dynojet PCV device connected to the dyno by CAN.
    5. Gear Ratio: For use when other rpm sources are unavailable. The dyno will estimate the RPM based on it’s speed. Uses the gear ratio shown in the gear ratio value editer on this tab.
  2. “Plugs Fire Every”: When using the inductive input this determines how far the vehicle crank travels between spark events on that wire. For example: a 4-stroke vehicle where the spark plug is only fired once per cycle will use 720, because the plug only fires every other revolution, a 4-stroke vehicle with wasted spark may get 2 spark events every cycle and will use 360.
  3. “Gear Ratio”: This value is for use with the Gear Ratio RPM source. Depending on units, this is the engine speed divided by vehicle speed. This can be easily calibrated using the Calibrate button next to the input box.
  4. “RPM Load Control Source”: Determines the behavior of Load Control when using RPM Load Source on a vehicle with inconsistent RPM readings.
    1. “Use Dyno Engine Speed for Load Control”: This is the default behavior, the dyno will use its actual RPM reading for controlling Load Control.
    2. “Use Dynamic Gear Ratio For Load Control”: This is for vehicles that have RPM input, but may lose accurate RPM readings periodically during testing. The dyno will use drum speed for controlling load using a gear ratio automatically calculated by the software periodically. This is good for vehicles that change gear ratio significantly while testing, due to factors like tire growth, or transmission gear changes.
    3. “Use Fixed Gear Ratio for RPM Load Control”: This is good for vehicles with poor RPM signal where the gear ratio should stay consistant during a run. This uses the gear ratio the user has input in the above Gear Ratio value editor.
  5. “Inductive Filters”: This setting adjusts the dyno settings for getting better RPM readings. All filters have recommended uses given in “hints” when hovering, but users may need to try several filters until best RPM performance is found for the vehicle being tested.

Wideband Configuration:

Settings related to configuring the Dynojet Wideband device will be found under this tab.

  1. “Air Pump”
    1. “Automatically Turn ON and OFF”: Enables or disables the software feature of turning the air pump on or off automatically when the dyno is in use. The trigger for toggling the air pump can be set in several ways.
      1. “When Engine Is Running”: turns the pump on when an RPM signal is read, turns off when the RPM drops to 0.
      2. “When Drum Is Turning”: turns the pump on when the drum is turning, turns it off when the drum stops.
  • “When Engine Or Drum”: turns the pump on when either the drum is turning or the RPM is over 0, turns it off when the drum is stopped and the RPM drops to 0.
  1. “Sensor Heaters”
    1. “Automatically Turn On”: Enables or disables the software feature to turn the sensor heaters on automatically based on RPM or drum speed.
    2. “Automatically Turn OFF after”: Since Wideband sensors take some time to warm up the automatic turn off feature is separate from automatically turning the sensor heaters on. This is also on a timeout so that the sensor won’t go cold when the dyno or vehicle are stopped for only a moment. The timeout value is adjusted in the adjacent edit box.
    3. “Toggle”: Changes the trigger method for the heater toggling on or off.
      1. “When Engine Is Running”: turns the heaters on when an RPM signal is read, turns off when the RPM drops to 0.
      2. “When Drum Is Turning”: turns the heaters on when the drum is turning, turns it off when the drum stops.
  • “When Engine Or Drum”: turns the heaters on when either the drum is turning or the RPM is over 0, turns it off when the drum is stopped and the RPM drops to 0.
  1. “Air fuel type”
    1. “Type”: Selects the fuel type for the sensor, this affects the stoich value.
    2. There is a “…” button next to the type to enter a custom fuel editor for adding or removing your own custom fuel types.

Analog Configuration:

  1. “Index”: Selects any of the 4 analog inputs on the dyno to configure.
  2. “Name”: Gives the channel a custom name that will be displayed on gauges and the key or legend on the graph.
  3. “Presets”: Selects one of the preset analog channels. Many popular or common sensors are preconfigured here by Dynojet. The user can also add their own preset confugurations.
  4. “Slope” and “Offset”: User defined analogs are translated from raw voltage using a slope and offset method y = ax + b where x is the raw voltage input, y is the displayed value, a is the slope, and b is the offset. The slope an offset adjust the translation. There is a calculator function which allows you to enter the desired input and output for two points to make the slope and offset easy to figure out.
  5. “Save”, “Remove”, “Export”, and “Import”: These buttons all manage custom user presets. When a configuration has been entered it can be stored for later use by clicking the “Save” button to add it to the Presets dropdown list, when an existing preset is selected you can click the “Remove” button to take it out of the list (preconfigured Dynojet configurations cannot be removed). “Export” saves the current analog configuration to a file for sharing or archiving for later use. And “Import” will bring in a configuration from a file that has been exported.


Was this article helpful?
11 out of 21 found this helpful



Please sign in to leave a comment.