Hey all. All right, I know it's not a WRX, but I test drove a 2006 Legacy GT today. While driving a bit into the gas (can't remember what rpm's were), the engine started making a weird sound; not quite a whistling but more like a French horn type sound. To me, it sounded like some kind of weird intake leak but was wondering what you all thought. It didn't do it during normal/light throttle but only while I got on it a bit (50% throttle).