u can hear the sound in dad's exhaust ,(it is an odd sound) before the displays says v4 mode. it also says at 65 on flat ground will go from 15-18mpg to 22-25 mpg( instant) on the display. i wish there was a ecco switch, where u could keep it off.
i have noticed it is not speed dependant but load. caus it iwll work from 20-80 mph(fast as i have had the gutless wonder)
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