The Screaming Eagle EFI Pro Super Tuner (P/N 32109-08A) module is a vehicle communication interface (VCI) whose flash memory allows for recording up to 15 minutes of data. The module is able to store information up to 26 variables that can be uploaded to a PC using an optional USB cable. Recording engine operation allows the driver or the technician to both analyze and assess the engine performance; it also enables optimizing engine operation through EFI calibration. Data collected during driving in real-world conditions allows for a more precise adjustment of the map.