Have any of you checked the accuracy of the avg mileage figure on the overhead console against avg mileage based on miles driven and fuel consumed? I didn't bother to check mine before we put a chip, (Superchip programmer), in the truck, and now the console figure is consistently off, (reads high), by several miles per gallon. I'm wondering how the computer figures the avg mileage, and if there is anyway to improve it's accuracy

Thanks:-)

Beth
02 PSD Excursion
97 F150
93 Honda Prelude VTEC
93 Mazda TT Rx7 R1
01 Corvette Z06

 

Do you mean it now reads higher compared to actual mileage you're getting?

 

Yes, exactly. Recently towed from Texas to Fl for a race, (on the lower stage of the programmer), and the avg mileage on the console read 19.3 mpg, but when we filled up actual mileage was approx 14 mpg. I haven't experimented by checking the mileage on the console with the truck on the stock program, I just assumed it was accurate. I guess I should probably try that first, and see if the console is off running the stock program and running the chip programs.

Beth
02 PSD Excursion
97 F150
93 Honda Prelude VTEC
93 Mazda TT Rx7 R1
01 Corvette Z06