Quote:
Originally Posted by bwilson4web
Do you have some way to scan data from an OBD or interest in instrumenting the car to gather data? For example, I used simple current loops to generate audio level signals recorded in a laptop. This provides raw data that can be used to quantify vehicle operation.
Bob Wilson
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I've considering getting a scangauge II, however I'm a little tapped out due to the holidays.
It seems there may be enough information on line to write a serial port interface (using a USB adapter) through the OBD port. I think I remember seeing the spec online somewhere so it should be possible to write a small program that would allow a computer to hook up to it and record whatever data one was interested in. If a cable doesn't already exist for serial to OBD, I'm sure wiring one up wouldn't be that difficult.
Though what I am most interested in is a dump of the firmware. I want to know whether the firmware in the ECU was tuned for best EPA test performance or was it tuned to more realistic driving condintions. I'd also need to know what CPU the ECU is running with.
Unless there is a seperate board controlling the battery/electric engine throughput, then I should also be able to see if it is possible to tweak the firmware to allow additional batteries or maybe a slightly more powerful electric engine. Not going to get my hopes to high on that one though.
~X~