Hi fellas, I have a 2008 ford focus 1.6 TDCI (110), when I use to come off the throttle my turbo use to flutter a lot, and it was quite loud, but all of a sudden my turbo no longer flutters, all I hear is a whooshing sound when I come off the throttle, the car feels fine, no lack or drop in power, so was wondering if anyone had any ideas ?