Not sure which 2011 Honda Fit Air Intake Systems are right for you? We have over 350 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Matthew M from Centerville, OH said, "I now have a completely different vehicle! As advertised, my mpgs have slightly increased (3) and the overall performance of the car is vastly improved. The installation instructions were not easy to follow, even with an experienced installer assisting. There were steps left out, some not complete, and the order at times was confusing. However the cai is installed and working fantastically, completely satisfied."