There are NO plans to produce a pre-OBD2 product. They're busy enough producing the devices for the more standardized post-1996 cars.
I think we could probably collectively come up with pre-obd2 instrumentation options. With respect to Yoshi, many people driving pre-obd2 cars by definition can't afford (or don't want to spend the money for) a MID.
One thing I've been thinking about is simply a datalogging DMM. You could use it to monitor/graph a single sensor variable, such as MAP. It wouldn't translate directly into MPG, but would still be very useful for testing or commuting, once you established baseline instant/average values. Essentially a digital, recordable vacuum gauge. That's the simplest thing I can think of.
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