Superior Precision and Durability. Easy - to - Read DynaFact Gauge monitors turbocharger performance in diesels. Dynamically indicates boost output and allows driver to target ideal boost setting with 0 - 50 or 0 - 15 psi configurations. 1 - Year Limited Warranty. Mounting systems for all of our gauges are available. Key Features Superior Precision and Durability, Easy - to - Read DynaFact Gauge Monitor turbocharger performance, Dynamically indicates boost output, Allows driver to target ideal boost setting, 1 - Year Limited Warranty Range 0 - 15 psi, 2 - 116 inch diameter (52.4mm)