Sounds very interesting.
We have a similar device, but focusing on live alerts (based on the parameters you mention), and on line live monitoring.
We use The accelerometer to log data and create driver scoring, and accident reconstruction.
If you gonna mess with OBD reading, Try and get the cam divination reading and generate alerts based on deviation from spec.
Could be ausom tool for IMS inspection and monitoring.
Can't put our engineers on it since it's way out of our scope.
Good luck, and keep us posted.
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