Exhaust Gas Temperature is a critical indicator of the performance of a typical racing engine. Injected nitro engines use EGT sensors rather than air/fuel sensors due to the volume of fuel being passed through the engine. Performance Data Systems’ A-Fuel series of thermocouples are designed for the harsh engine conditions and high cylinder temperatures typically found in injected nitro-burning engines. These probes feature a stronger insulator, to protect the tip of the probe in these applications. These thermocouples also work well in both gas and methanol engines.