First, I know someone is going to blast me with the whole "noob" label and tell me "do your searching" but I feel like I have done signifiacnt research without much answer. I am trying to decide between the aem/ms cai and the racing beat w/ air duct intake and need some help with a noise question. I want the extra hp (1-2 i know) of the aem/ms and i dont mind extra noise at WOT but want the car to still be relatively quiet without much droaning while driving back and forth to work (constant highway speed). Are these intakes loud while just cruising? If so i think i might go with the racingbeat (not to mention the easier installation). Any opinions and input is appreciated.

 

RB is the quietest of the two intakes. I have the MS CAI (which is the AEM cai with the mazdaspeed label) and I don't think it's too loud, but others do.

I've heard the RB and the MS up close from the inside and outside of the car. Neither drone at any point but the MS is noticeably louder at WOT. Of course nothing is as loud as the Typhoon II... that thing will make your ears bleed.

 

droning is usually from aftermarket exhausts, not intakes. intakes can be loud at WOT, but they rarely sound too much different with normal driving.

 

intake at cruise shouldn't make any sounds.