M130 GPR Rotary firmware

[Niklas Sandstrom]

I have some questions when tuning an Rotary with ITB's using the multi throttle tuning guide.
https://www.motec.com.au/filedownload.p ... docid=5973

Using fuel film for transient tuning but the axis is locked to Inlet manifold pressure. When the Inlet manifold pressure estimate is tuned to throttle and you run a sweep you can have steady throttle but the MAP changes with RPM. Does that influence the fuel film?

And when the ignition map and injector staging is also locked to MAP doesn't that make the tuning difficult especialy with boost?

Also is there an timeframe when the compensation maps for boost is going to be added?

[NathanB]

GPR Rotary has the option of a fuel transient mode, similar to what the M800 used to use. This can be used in place of the fuel film model.

When Boost is involved, a boost sensor is required and the boost pressure relative mode is used for the inlet manifold pressure estimate mode, so there is no issue.

The efficiency compensation tables should be available in the next update.

[NathanB]

The update has been uploaded and is available for download with the efficiency boost/airbox compensations.

[Niklas Sandstrom]

I cant find a boost pressure sensor input in the firmware.
Can I use airbox pressure instead with an supercharged engine?

No sensor in the manifold with ITB´s only estimated MAP and an pressure output in the plenum.

[David Ferguson]

Looks like you are looking for "Turbocharger Bank 1 Pressure Inlet Sensor Resource".

I found this using an All calibrate tab, and searching for "pressure" with the Setup and Normal tags ticked.

Like many recent packages, I find the quality control of the default worksheets to be lacking. Often necessary parameters and tables are not listed as the list is hard-coded and not updated with channel changes. I know it's my fault for not reporting these, but I just fix them and move on.

I guess the "pros" only use the All Calibrate tabs for what they want to tune.

[Niklas Sandstrom]

Is it correct to use that sensor input?

Turbocharger Bank 1 Pressure Inlet


This channel is used by the Turbocharger Bank 1 Speed Boost Limit calculation to calculate Turbocharger Bank 1 Speed Boost Limit Pressure Ratio.

The Turbocharger Bank 1 Pressure Inlet is equal to Turbocharger Bank 1 Pressure Inlet Sensor but falls back to Ambient Pressure if Turbocharger Bank 1 Pressure Inlet Sensor Diagnostic is Not in Use, High Fault, Low Fault or CAN Timeout.

There is compensation trim for Airbox and Boost pressure with the new rotary firmware but I cant find the Boost pressure channel or sensor setup.

[NathanB]

No, you need to assign a resource to the 'Boost normal resource' for the boost pressure sensor resource to become available.

You can assign this to a dummy resource (PDM Byte xxxx or E8xx output xxx) so you don't waste any wired resources.

[Niklas Sandstrom]

Thanks Nathan that did the trick.