The extra data provided by an obd tool (i.e. scangauge) like rpm, throttle position, load, and open loop indicator would be helpful if you want to monitor those items.
the guino can only sense the injector pulse width and the speed (distance) sensor and the 4th dimension. and is oblivious to the concept of open loop, unless it is marked by a large change in consumption that the user can notice.
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WINDMILLS DO NOT WORK THAT WAY!!!
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