The Mach Meter Display is designed to work with the CXT/MXT Mach 7 performance module. Simply plugs into the Mach 7 module and allows the operator to adjust power setting on the fly while displaying the critical parameters such as exhaust gas temperature, manifold pressure, engine oil temperature and engine RPM. There are 7 pages of different screen options to view data. Display up to 4 different parameters. Includes timer, adjustable lighting and other selectable user modes. No drilling of your dash, simply clips on the instrument bezel.