Anybody get a slight buzz above 6000 rpm? When I floor the car, in any gear, I get a slight buzzing sound when the tach swings to the upper ranges.

The sound appears to come from the passenger side, and it almost sounds as if something is resonating.

 

Are you sure its not the shift lever?

 

I remember that there was a similar post when the 350Z came out and it was a driveshaft guard that was vibrating... i'm not sure if that is what the issue is but it's something to think about.

 

I have that exact same buzz. It doesnt happen all the time though. I think it is dependent on the temperature or something because when it does happen, it will do it everytime I floor the car at high RPM, and then some days I can not replicate the sound. If you find out what it is, please post the problem. I have only heard it from the drivers seat and yes, it sounds like it comes from the passanger side. Possibly from the passanger door or something. I played with the vents, vanity mirror, rear view mirror and sungless holder and it is not any of those.

 

Yeah, it sounds like its coming from the dash or under the floor on the passenger's side.