Autometer 2-1/16in 0-300 Degree F Digital Sport-Comp GaugeMonitoring The Temperature Of The Air Going Into Your Engine Is Critical To Safely Extracting The Most Power From Your Engine, Especially When Dealing With Forced Induction. Cool, Dense Air Will Always Make More Power And Minimize The Potential For Harmful Detonation. Autometers Dual Channel Air Temp Gauge Allows You To Accurately Monitor The Air Temp Before And After The Intercooler, As Well As The Ability To Monitor The Delta, Or Difference In Temps