I love gauges. Give lots of info. and if there's a problem you may be able to pinpoint it quickly or prevent it. Let's you know what is going on in your engine. For instance oil temp would go up before oil pressure drops if you had a slow leak. (Had that happen on a GM diesel years ago). So how 'bout this: pyro, boost, fuel press, rail press, a real oil press, (not the stupid facotory one) oil temp, trans oil temp, ammeter :-laf