Not sure which 2004 Mazda 3 Air Intake Systems are right for you? We have over 15237 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"I own a red Mazda 3s, and ordered the red CAI. Although removing the stock equipment wasn't as easy as I expected, the installation went very smoothly.The first thing I noticed was it took my ECU about 10 minutes to adjust, then the engine was humming smoothly. I immediately felt an increase in Horsepower from the low end all the way through to the high end Revs.I also noticed a different tone once I hit 3500 rpm's, my car never sounded so impressive until this purchase, and that's with the stock exhaust system.My mileage had also increased, probably due to the fact that I do not have to rev as high to accelerate to cruising speed.If you are thinking of purchasing this for your Mazda 3, I highly recommend it.Thanks AutoAnything for the fast shipping and great low pricing!!!" —Frank G from San Diego, CA bought an AEM Cold Air Intake System for a 2004 Mazda 3.