Hey guys. This morning i was leaving a buddies house maybe 40 something degrees outside, kinda chilly. I was leaving and as i was driving i noticed the turbo was acting weird. Car had the same power but i dont know if it was just cold or not and needed to be warmed up but this has never happened. The turbo would spool and then after i shifted the turbo had like an echo kind of thing. i cant explain it. It was a weird sound though and it seemed liek the sound just dragged on after i shifted? Sorry for bad explanation haha. Any advice on what it is? thanks guys.

 

I noticed on my car when the ambient temperature is lower I get more BOV flutter.

 

that started to happen to my Greddy and it was the rubber seal breaking down, just got worse over time, ended up replacing it once the boost began to leak.