i've had the aem cai on my 02' rsx-S, i loved it since i first revved it up...it has a badass sound but only when revving up around 4 and higher then screams loud as hell, but gave alot of pull. it gave me about 10-20 extra hp, i can feel it...my friend dyno'ed his cai on his rsx-S...it claimed 20whp, so hes producing 225bhp and 185whp with 132lb of wtorque. i'd most likely be getting another aem cai for this itr.