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Originally Posted by brick
As far as fuel economy is concerned, this is mainly geared at people like me who drive a car without a sophisticated trip computer. I can't even begin to tell you what that feedback has done for my driving. I believe it is also used by people who do have trip computers but don't find the OEM feedback to be completely satisfactory. Not only does the SG give you more options, but it allows you to tune the calculations to match your calculations at the pump, reducing discrepancy between what you think you are getting and what you are actually getting.
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Wendy -- Yes all TCH's come with the integrated trip computer, but I don't have a NAV... so I miss out on some FE readings/facts available to those
with NAV (
trip MPG vs. just tank MPG average comes to mind: very useful for gauging your daily commute's FE over time). Plus I do compare the instantaneous speedometer/MPG/odometer readings from both 'computers', trying to decide which one is more useful/accurate (and which one I'll rely on in the future). Finally, it also provides me with other scans that I peruse once in a while (RPM, voltage, overall load), teaching me a quite bit more on how the ICE portion of my HSD truly operates at diff't times/conditions. Very interesting discoveries, if you're into these kind of things...