I'm in the process of buying all the gauges I need for my *ahem, car. Got the boost gauge but was wondering what should I do about an A/F gauge. I have heard that Autometer's gauge is terrible. The decent one seems to be Greddy 400 dollarines one, but thats 400 bucks cats that I don't know if I should spend. Anyone know of a good system, whether it be one of those dashboard meters or what not.