[t vago]

This:

	if (parms[metricIdx] == 1){
		distancefactor /= 1.609;
		fuelfactor /= 3.785;
	}

is 572 bytes larger than this:

	if (parms[metricIdx] == 1){
		distancefactor = 1000 * distancefactor / 1609;
		fuelfactor = 1000 * fuelfactor / 3785;
	}