These EGT Fitting caps are designed to seal off EGT bungs when not in use.
The XFI EGT (Exhaust Gas Temperature) Module from FAST allows XFI/XFI 2.0 owners to monitor up to 8 EGT sensors without requiring the use of the 8 spare auxiliary XFI inputs. The XFI EGT Module utilizes a small, thin cable to communicate through a high speed CAN connection