Hey guys & girls, I have an 07 WRX with a K&N panel. After installing an invidia bellmouth cattless dp and uppie with a Borla Hush, my turbos makes a high buzz when COLD while putting any boost to it. The warmer it gets, the less it does it and the more boost required to make that sound at all. After warming up quite a bit, it stops completly. What in the world??? It drives me crazy. I was super careful when I did the work, I'm not sure whats up. Any thoughts??