what does the si stand for in honda civic si
1 Civic EX-L: the EX-L stands for Executive, Loaded, fully loaded with leather and heated seats. 2  CIVIC Si: the Si stands for Sport Injected and comes with exclusive Si trim and a 201-hp, 2.4-liter, DOHC i-VTECÂ® Engine. 3  CIVIC HF: the HF stands for High Fuel and takes fuel efficiency to new levels.