Ok, So I got my S7 gauges and now I want to do a dual gauge pod to match the gauges. My question is what gauge to do... I know for sure I want the voltmeter gauge, but I'm stuck trying to figure out what other one to do. What would be the most useful gauge to use. Don't have Turbo so that is out. Even though my car is more on the show side right now I still want to put in one that is somewhat useful.