I'm translating with google translator and I hope it goes well

I’ve updated my 4x4 roller bench to “Una Vision” during these holidays, and I must say it’s a fantastic app.

I have a YourDyno V4 and a USBCAN/CANanylst-II adapter, but I can't configure the CANBUS output to send the YourDyno torque and power values ​​to my data loggers.

I’m sure it used to be possible in the past, because in the CANTool plugin you had to check “Announce YourDyno Data on CAN bus” with the IDs you wanted to transmit, but now I can’t find it.

Can you tell me where I’m going wrong?

Thanks

@martino-montefiori, thanks for the kind words. CAN out is very easy to do with the newer YourDyno units (v5 and Ultimates) but with the v4 and the CANTool plugin it is not possible. There was some limited CAN Out functionality in the original CANTool plugin, but that functionality was removed when the plugin had a major overhaul a year or two ago. If you want CAN out you need the v5 or Ultimate.

@cmadmin , OK
Now everything is much clearer
and thanks for the quick reply.

Been running this version a few days now. I am running 3 screens.  One on a laptop and 2 larger remote auxiliary displays. Every time I save a run and restart a new run, the gauge screen opens in a on the laptop screen, and I have to move the window the remote display. Previously, it always opened the new run on the same display, wherever it was.  Annoying to need to move the gauges before every run. Is this something in the software, or did I accidentally mess something up on the computer with a Windows update?

 have same issue on latest update. It will swap the gauge  screen to my other screen and cause half the gauges to disappear. I have to manually bring it back each time. 

• For cars with large torque converters, roller RPM lags behind engine RPM due to converter slip.
• Example: At the engine limiter (6,400 RPM), the dyno only sees ~5,200 RPM from the rollers.
• Torque is measured correctly, but since power = torque × roller RPM, the peak power figure is under-reported (e.g., ~260 rwkW instead of the ~300+ rwkW you’d expect on the same setup in a manual).
• I can’t use inductive clamps (too close to headers, they melt), and these ECUs only output VPW (so CAN RPM is not available).

Suggested Feature Request: RPM Scaling / Limiter Calibration

To address this, would there be anyway to have an option for manual RPM correction in the software. Possible implementations:

1. Limiter Calibration Option
   
   • Let the user enter the true engine RPM at the limiter (e.g., 6,400).
   • The software scales the RPM axis so that the end of the run matches the entered value.
   • Power figures are then calculated against the corrected engine RPM, giving a more accurate peak kW number.
2.  
3. Manual Scaling Factor
   
   • Let the user apply a multiplier to roller RPM → engine RPM.
   • Useful when slip is relatively consistent across a run.
4.  
5. Advanced (future option): Slip Curve Correction
   
   • Allow a curve fit or two-point calibration (e.g., at 3,000 and 6,400) to map roller RPM to engine RPM more precisely across the pull.

This would make the dyno much more accurate for high-stall automatic vehicles, aligning results with manual cars and providing more inline, power figures — while still keeping the raw torque trace untouched

Thanks Jostein! These high stalled cars are such a pain! 

Folks, to those reporting the gauge screens don't stay in some setups. This is due to a new check that was supposed to check whether the window is outside the screen coordinates. Sounds like I need to adjust that algorithm. 

The point with the check was that some users inadvertently moved the header of the window outside of the visible screen and there would be no way to bring it back, except manually editing the options file. This could also happen when the screen configuration was changed (different resolution, different number of screens, duplicate vs extend etc). 

Thanks for reporting. I will change the implementation. 

Folks,

UnaVision 4.0.52 is released today (beta). 

Changes:

• For chassis/hub dynos, the brake(s) are no longer turned off directly upon reaching the end RPM when the Retardation measurement is on. It will only turn if off when it sees the torque dropping hard, indicating the throttle was released/clutch in/neutral
• Fix of brake response on the second set of hubs on 4WD hub dynos. Same fix was applied to YourDyno v3.3.103
• Fix of the automatic move of the Run window into visible area
• A few other minor cleanups

Enjoy!

Folks,

UnaVision version 4.0.55 was released today. Some nice new features!

New features:

• Support for Compound CAN bus messages. These types of CAN messages are used by some ECU brands like Motec and Link
• Support for Drive ratio between brake and rollers/hubs and between RPM sensor and brake. This is used when the brake is geared up or down compared to the roller/hub and/or when the RPM sensor is not directly measuring the brake RPM. This was supported earlier only through some manual calculations
• Now custom Run parameters in the database are copied from the last run when creating a new run. Practical so you don't need to write them for every run, only when something changes
• Faster detection of early stop of run (when you go off the throttle), and faster transition into the Coast down mode or Brake after run
• The Brake Specific Fuel Consumption (BSFC) plugin now includes a Mass flow rate data channel. Units support are lbs/h, kg/h and g/min
• Ability to select All settings or Engine/vehicle dependent settings when loading a profile. Earlier it would by default load the Engine/vehicle dependent settings only
• New color option for the graphs: Now you can select that the newest run (only) will have fixed colors. When a new run is started, the previous one will change colors if it had the fixed colors. This way you always know which is the current/last run and can easier compare
• Warning message that data will be lost when pressing Restart or Close when a run is complete

Improvements/fixes:

• "Show data beyond start and end" did not work when using retardation data
• Fixed risk of early run stop when using Variable gear ratio and Auto Stop if the Direct Engine RPM channel had glitches (inductive clamp typically)

Enjoy! As always, let me know of any issues. Mail to jostein@yourdyno.com is preferred.