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scan guage
So my 2013 sti has a mpg meter built into the car already.
I noticed you sell one on here called scan gauge.
What make scan gauge a good method of metering mpg's ?
both take readings from the same point the data read outs of the car..
Also with all the variables such as ethanol content gas quality ( other than the ethanol) and detergents added how can either my mpg meter or this scan gauge even be accurate?
even the capacity a gas tank can hold itself can expand with heat or contract with cold weather..
Are those both just sort of guild line meters rather than actual accurate mpg meters? something to shoot for the highest number read out sort of thing and blindly believe in its accuracy lol?
Just a few questions about mpg meters in general.
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