The sharp-looking X Monitor digital gauge ($379) from BD Performance mounts to all diesel-powered Ford, Dodge, and GM trucks' A-pillar or dash to display two to three different readouts at the same time. Choose from exhaust temperature, turbo-boost pressure, transmission temperature, differential temperature, exhaust brake pressure, or auxiliary fuel-tank level to display. By setting the alarm values, a visual or optional audible warning will respond if they're reached. BD Performance; 800/887-5030.
www.dieselperformance.com