Best couple of gauges to add to your UG that I have found is Throttle Postion, the Avg MPG and INST MPG. I use my throttle position all the time because I can mess with hoe much pressure I'm putting on the pedal to squeeze a couple more MPGs out. I try to stay around 14-18% I have noticed the car stay at 9.4 just idling. Like most say the UG is probably the biggest mod you can do to the car.
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