TACH - Tachometer
TB - Throttle Body
TBI - Throttle Body Injection
TC - Turbocharged
TCC - Torque Convertor Clutch
TCM - Transmission or Transaxle Control Module
TDC - Top Dead Center
TDI - Turbo Direct Injection
Temp. - Temperature
TFI - Thick Film Ignition
TPI - Tuned Port Injection
TPS - Throttle Position Sensor/Switch