When performing the PowerBalance test, is there a way to raise the RPM window (the bar that turns yellow) so that results are still obtainable?
The yellow bar that you are seeing is caused by a limitation of the vehicle PCM and not WDS. The reason you are seeing this yellow bar is at higher RPM’s the PCM may not have time to send all needed data for each cylinder during that engine cycle. On WDS we have implemented special error handling to work around these missing events up to a point. When an event is missed, the RPM bar will turn yellow and when multiple events are missed, we will stop the display from updating to avoid the possibility of giving inaccurate results. If you are familiar with SBDS I think you will find that the RPM limit for Power Balance was approximately 2000 RPM. With the error handling we have implemented on WDS we can now obtain approximately 2500 PRM on an eight cylinder engine and upwards of 4000 RPM on a 4 cylinder engine. We agree it would be nice to be able to handle any RPM for Power Balance; unfortunately the current PCM data structure and processing rates are our limiting factor.
Related Questions
- My test solution turns yellow after I add the paint sample to test solution 1 bottle, but prior to adding test solution 2. Why is this happening?
- When performing the PowerBalance test, is there a way to raise the RPM window (the bar that turns yellow) so that results are still obtainable?
- Why does the test sometimes start even if yellow is still showing in the strip window?
