For what year car and is it forced induction/nitrous? If you are blown the two most important are a boost gauge and a fuel pressure gauge...Nitrous would be a fuel pressure gauge and a bottle pressure gauge...for N/A I'd get a oil pressure and water temp...A/F gauges are just for looks and a nice light show...they don't really show you much unless you have a wideband O2 setup...
For what year car and is it forced induction/nitrous? If you are blown the two most important are a boost gauge and a fuel pressure gauge...Nitrous would be a fuel pressure gauge and a bottle pressure gauge...for N/A I'd get a oil pressure and water temp...A/F gauges are just for looks and a nice light show...they don't really show you much unless you have a wideband O2 setup...