contrary to the popular belief, you don't need all those gauges that add blingage to your car. if you really needed it, it would have come from the factory. If you invest money into proper mods, then it's just "set and forget". The reason why many ppl need many gauges is to monitor all their engine parameters which have not been set properly. If your car is properly setup, u don't have to worry abt watching your gauges. Don't even need a boost gauge. But do get yourself a turbo timer. It'll save u a lot of trouble and waiting time.