I have begun hearing the "woosh" sound from the turbo before shifting gears. I'll get to around 3k rpm and i will start to hear a steady woosh sound until after i shift again. Honestly, I'm a noob when it comes to turbos. Any help is greatly appreciated!
It is stock except for a K&N air filter in the stock airbox. The dealer replaced the gasket to the downpipe 8 months ago. I havent noticed this sound until the other day. I was just driving it and it seems like it happens everytime i let off the gas too. Thanks for your reply!