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I recently bought an EVIC from a member to replace my factory chronometer in my Turbo Z. I wired it up properly, and all functions work. Last night I finished my first tankful and compared the computer readings to calculated at the pump.
Computer showed gallons used as 11.2. I pumped the car and it clicked off at 7.2, which usually means I can get 2 more gallons in. I pumped it to the cap and got 10.0 gallons in. So the fuel gauge interpretation was off that much. The gas gauge had read 1/4 when I started filling. Miles traveled (331), of course, is the same on EVIC as the trip odometer, since they have the same source.
So the EVIC gave an average reading of 29.6 mpg, in reality I got 33.1 mpg. Has anyone else experienced such an error? That's 10%. Most people report that they are closer than this.
Computer showed gallons used as 11.2. I pumped the car and it clicked off at 7.2, which usually means I can get 2 more gallons in. I pumped it to the cap and got 10.0 gallons in. So the fuel gauge interpretation was off that much. The gas gauge had read 1/4 when I started filling. Miles traveled (331), of course, is the same on EVIC as the trip odometer, since they have the same source.
So the EVIC gave an average reading of 29.6 mpg, in reality I got 33.1 mpg. Has anyone else experienced such an error? That's 10%. Most people report that they are closer than this.