Features: 1. Function: The PSI tachometer is used for real time turbine pressure monitoring, with low power consumption, long life, high accuracy, and short start up time. 2. Parameter: Boost readings from 0 to 30 psi, gauge with black dial, clear lens and illuminated red needle; outer diameter is approximately 2 inches (52 mm). 3. Features: This 7-color boost gauge allows you to quickly and accurately check your boost levels for precise PSI adjustment. Users can select from available color options. 4. Fine Workmanship: Professionally manufactured with excellent craftsmanship and a unique design to ensure stable performance and high reliability. 5. Application: Easy to install, durable, impact resistant, and designed for flexible and straightforward operation. Package includes filter and manual for convenient setup. Suitable for petrol-powered modified models. Specification: Item Type: Turbo Boost Meter Material: ABS Outer Diameter: Approximately 2 inches (52 mm) Color Options: Blue, green, red, bluish green, yellow, purple, and white Application: Compatible with petrol-powered modified models Package List: 1 x Meter 1 x Filter 1 x Leather Tube 1 x Tee 1 x Cable Sensor 1 x Manual 1 x Harness