Not sure which 2011 Mazda 3 Air Intake Systems are right for you? We have over 450 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. John R from Latham, NY said, "I added the air intake to my Speed 3 in order to get some more power and also help fuel consumption. I haven't put a lot of mileage on since the addition, but it seems to have helped both issues.The installation was pretty simple, and the instructions were pretty comprehensive. Knowing K&N products, it will be a long-term improvement to the intake package the car came with."