I got a good deal on a 2-gauge Autometer pod from Mitch at P5online and I'm deciding what gauges to put in. Right now, I know the first is an oil pressure gauge (electrical). However, I can't decide on the second gauge. I considered an Air/Fuel ratio, but will that tell me anything useful with an NA engine? My second choice is coolant or oil temp gauge.

Any thoughts?

 

Although the stock coolant temp gauge is useless, oil temp and pressure are what you ideally want. Oil is the lifeblood of your engine and knowing exactly what it is doing is key.

 

i agree, i'f you have no plans on turbo'ing your car then go w/ the oil temp/pressure.