I am new to the site and this is my first post!!
First of all I love WRX's and would give anything for one!!
My post is about a certain sound i have heard from some WRX's I have seen...when they are at a cruising pace and not really accelerating there is sort of like a high pitched sound....it gets higher as they accelerate more....at first I thought it was the turbo but im not quite sure...anyone else know what im talking about that can help out???