Twice the avg mpg of my jeep this last trip avg 70-75 mph
Band only if 1st and reverse don't engage but 2 & 3rd do.
Since he said it was delayed on the shift up, that leaves open other possibilities. Up shift releases the low band. Could be something related to pressure - filter, pump, gov. or whatever is done to make it a MVB since it doesn't use throttle pressure lever.