I have 6500 miles on my 03' 350Z. I have an AEM CAI with everything else on the car stock. I just noticed that when the car has not been run for a while and it is first started up, the exhaust makes a chirpping noise that emits not from the tips, but from the "box" from where the tips emit. Only noticed this after getting my oil change (from the dealership), and only noticed this happening in my garage. I left the car at work in uncovered parking for about 10 hours, and when I started it up, that noise was not there. Also this noise lasts for usually 30 seconds decreasing with time until finally ceasing.

Does anybody know what this could be and/or had this happen to them?

 

Anybody???

 

i think i am experiencing a similar problem. happens usually only when the car is cold and when i hit bumps. been too lazy to go to go to nissan so i use the lazy mans solution of turning up the radio but now that my driver side window just failed looks like im gonna have to schedule an appointment.