I searched around for an answer but didn't find a definite one...
I've only had my rex (04', 4eat) for a couple weeks and it's my first turbo. I've been hearing a very subtle phsst, whoosh, etc. sound at about 2500 rpms. (I know that's a bad description) I guess I'm wondering if that's normal? I'm trying to learn my new car and the sounds that it makes so that hopefully I'll know when something isn't right.
Anyway I only hear the noise at low speeds at around 2500-3000 rpms. Any faster and the other noises take over and I can't hear it anymore. From my searches I"m wondering if it could be the sound of the turbo starting to spool. The wastegate opening? (I don't know anything about the wastegate other than I think it opens and closes, right) My car is completely stock. I don't have a boost gauge yet so I can't help you there. (I will be getting one soon though)
Any help on this would be great. If anyone is better at describing sounds and can tell me some other normal sounds to watch for that would be helpful too. Like I said I want to learn all of the normal sounds my car makes.