With the addition of bolt on performance parts, many of your engines systems may be put to the test because of the added strain.
The best way to monitor your systems performance is with a set of gauges. Boost, oil temp, oil press, water temp, EGT, and Air/Fuel ratio gauges are but a small glimpse of what is available.
In this section you'll find many different selections. It is best to have a plan for which gauges you wish to run as some of them require a separate control unit which is brand specific. These control units allow you to "daisy chain" your gauges together and some also have memory for data logging and play-back features.