Tripminder on HO ecu?
Reply #1 –
What processor are you running? If the injectors are matched to the processor, the fuel consumption information sent to the cluster should be correct. I'm using a A9P which was calibrated for 19lb/hr injectors and my fuel economy numbers from my tripminder appear to be correct. I average 25mpg steady cruise at 70mph.
Check your fuel usage against your mileage driven manually. If your speed is off due to different gears or tires, this can give you a false fuel economy reading also.