Not sure which 2004 Acura RSX Air Intake Systems are right for you? We have over 20796 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 just installed the intake in my 04 RSX and immedietly noticed a gain in power. it sounds alot different (better) in high revs. it gave my RSX a little bit of power and a much better sound. the most significant change i've noticed was the increase in MPG's. i was getting 33 to the gallon, now im getting well over 40, but take in consideration that i drive it gently and use only BP premium. excellent product, very well worth the money,must have. i wish i thought of this sooner. good luck. (stick with K&N, dont let anyone talk you into those cheaper instore rigged products)" —Mudar A from Greenville, SC bought a K&N 69 Series Typhoon Intake Systems for a 2004 Acura RSX, Base model, 2.0L 4-cyl. engine.