gplracerx wrote:The 8-9 Hz with the Kiwi wasn't stable at an actual event. I had rates all over the map. In one case I was seeing 40Hz, but no actual data. Killing the app and restarting fixed that. Unfortunately, I didn't have time to create a log at the event. I'll see if I can duplicate the problem when I'm not under time pressure and create a log file. But it's going to be a week or more before I'll have the time.
The varying OBD rate is most probably due to a system overload. Due to the request / reply pattern, any lag in processing on the LapTimer side has an impact on the update rate. I have a test version for Android that dedicates a full thread just to OBD processing and this version delivers a more constant rate (i.e. no exceptional lags). This version is not yet stable however, and will require quite some effort to cope with synchronizing the parallel activities.
In case you are still using an iPod plus a 10 Hz GPS and this high frequency OBD approach, it is likely it is time for the next gadget generation. The iPod touch devices come with significant less computing power than iPhones and iPads.