Quote:
Originally Posted by steve99
Wouln,t it be more to do with most apps like torque dash command etc are using standard obd pid calls to ecu, where as stuff like ecutek oft tactrix are making direct ecu ram address reads which is way faster.
The data rate over blutooth should be heaps fast enough for some log data
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No, it's 100% something to do with Bluetooth. If I force the same protocol/data rate with Bluetooth, there's still a delay. USB is effectively instantaneous. This is with OBDLink SX USB and Torque from last night actually. I gave my Bluetooth adapter away so I can't show a comparison but there's somewhere on the order of 300-700ms delay with Bluetooth.
[ame="https://www.youtube.com/watch?v=x8zHD6tfcjo"]Torque and OBDLink SX - YouTube[/ame]
So, basically, I agree the data rate is fine. Actually, the OBD data rate is 500 Kbps which translates to around 250-300 PIDs/sec. SSM can only be faster. My gripe is the latency makes live gauges just kind of... barely acceptable?