[Mike@N54Tuning.com]

For those wondering how the 2.0 datalogging works, here is a simple direction sheet and explanation of what the fields mean. You can download the latest interface program here:

http://www.n54tuning.com/JB3/jb3_interface_013110.zip

I will be putting up a JB3 software section soon so you will be able to download all the latest firmware software as they come available. I will post the link once I build the page

Datalogging directions:

To being recording click “file” “connect” to establish communications with the JB3. If you fail to connect, ensure you’ve selected the appropriate communications port under settings.

If the RPM and other signals are moving around below you are recording. If you have stopped recording for any reason and want to restart or reset a log you can click “data logging” “start”. The interface will store up to 5000 data points. If you have samples / second set to 10 under settings this will yield a maximum of around 8 minutes of recording time per log.

At the conclusion of your runs/log, click “data logging” “stop and display” to stop recording and plot the datalog. Parameters can be added or removed from the display by clicking the “add” button next to each. If you want to save the log for later, or email to BMS, click “data logging” “export” “csv” and save the file. You can click “data logging” “open CSV” to study the log at a later time. All parameters will be always saved in the CSV regardless of your viewing settings.

Use the “data logging” “X Axis” menu to adjust the scaling or filter out non-WOT activity. With longer logs and slower computers scrolling through the display can be slow, so limiting viewable data to near WOT activity only can be a time saver.

Logable Parameters:

1) Pre-Boost. Boost pressure as measured before the throttle body. Generally will match manifold boost pressure like one might read from a mechanical boost gauge except in cases where the throttle body is not fully open. Such as during DTC intervention or loss of traction, sudden shifts, letting off the throttle at the end of a run, and over target conditions where the ECU throttle safety is kicking in. During these conditions pre-boost will spike up prior to the diverter valves opening. Scale is 0-20psi along the left of the chart.

2) RPM. Engine speed in revolutions per minute. Will roughly match your dash tachometer. Scale is 0-7000RPM along the right of the chart.

3) IAT. Air intake temperature post intercooler in degrees Fahrenheit. Scale is 0-20 = 0-200 degrees F along the left axis.

4) TPS. Throttle position / gas pedal sensor, 0% = idle, 100% = wide open throttle. Scale is 0-10 = 0-100% along the left axis.

5) MAP. Currently selected performance map. You can use the drop down to change maps while logging is active.

6) Fuel. Amount of fuel enrichment being added. Scale is 10-20 = 0-100% along left axis.

7) ECU PSI. The amount of boost the ECU is observing, generally 6-8psi during WOT activity. Used as the process variable for the PWM PID controller. Scale is 0-20psi along the left axis.

8) PID PSI. The minimum ECU PSI allowable for the given conditions. Above this value less PWM is required and below this target more PWM is required. Scale is 0-20psi along the left axis. It is normal for ECU PSI to float high above PID PSI under certain conditions such as part throttle indicating the JB3 does not need to supplement PWM at that time. As ECU PSI falls below PID PSI the JB3 must increase PWM to sustain target boost levels.

9) PWM. The boost solenoid/duty cycle/wastegate offset. Higher values indicate more wastegate closure initiated by the JB3 and lower values indicate less wastegate closure. This value is determined by the PID controller which is driven off ECU PSI and PID PSI and influenced by parameters under user adjustment.

10) Clock. An internal variable used by BMS. Has no significance to end users.

11) Timer. An internal variable used by BMS. Has no significance to end users.

Mike

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[6spdMSport]

Is this MAC compatible ?

[5soko]

Looks awesome! cant wait to try it.

[huyner328]

Some MAC love would be niiice.

[jpsimon]

just run windows in parallels/vmware/bootcamp

[john boxter]

when is 2.0 gona become availible?