Swishing noise while accelerating

[iGOzoom]

Not sure if this is posted in the right section, but if not MODs please move! Thank you.

Anyways I've been hearing this swishing noise while I accelerate for a few weeks now but haven't gotten a chance to go to Mazda to check it out. Does anyone know what it can be? It sounds as liquids are going into other liquids sort of, its a bit hard to explain. If anyone knows what the problem could be that would be great! Thanks!

[Donutz]

Does it happen consistently at a given RPM? Any chance you are hearing your CAI?

[iGOzoom]

Does it happen consistently at a given RPM? Any chance you are hearing your CAI?

Happens at any given RPM. Even if I start the car and let it idle for quite some time I can still hear the noise. I actually didn't even take into consideration if it was the CAI or not. Maybe that could be the reason.

[JonsMazda]

Its ur CAI, happens to me too.

[TheMAN]

maybe this is the problem
http://www.protegefaq.net/tsb/mt000004208.html