During dyno testing this past week, the engine would cut out at around 9600 rpm, without any apparent reason. I've reviewed the logs carefully, and there's no fuel or ignition cut and the engine speed limit is 10000 rpm at the time of the cut-out/stumble.
The car/engine is a Radical SR8, and the redline should be fine to 10500. I'm using custom GPR-based firmware, with dual DBW throttle servos.
The only thing I can see is a throttle pedal diagnostic of Open Warning, caused by a main and tracking reading of 103.1%. This was in place for about 4 seconds before the drop in rpm. Can an Open Warning cause this?
If not, what else might it be? I'm happy to provide the log if anybody wants to take a look. I'm back to the dyno early next week so any additional logging is possible as well.
Thanks!