The AEM Tru-Boost Boost Gauge/Controller combination is a multi-featured system for simplified, comprehensive boost control. Packaged within the 52mm Tru-Boost are a 29psi capable boost controller and a peak-memory boost gauge. Other built in features include an overboost alarm with auto shutdown, wastegate delay for faster spool up, and a driver for an external warning lamp. AEM includes both a black and a silver bezel as well as black and white faceplates for simple color selection and easy matching to other AEM gauges (i.e. serial gauge, UEGO, etc.)