Does anyone has the xgauge parameters for MPG reading that shows up on the dash readout? I have a really hard time reading mine between less than perfect eyesight (>60 years old), not overly bright dash readout and sunglasses dimming available daylight. I'd like to program an xgauge that matches the dash one. I know I can check the scangauge trip or tank ang MPG but I don't religiously update the scangauge with each fill up, so it isn't super accurate.