I have a cold air intake on my mazda 6 car. At the top of where the tube meets engine area there is a noise. It's not a constant noise, almost only when the car is first started. I don't know the name of the part where this takes place but can hear where it's coming from. Any suggestions??

Maybe its the valve tappets. circulation of oil has not reached its peak since the first start. wait a few minutes for oil to reach the top of engine. normally cold air intake reach the engine at the first start. air from the exhaust manifold is recirculated to improved combustion.

Without seeing where you are taling about im guessing it to be noise from air going past the idle ait solenoid at the throttle body, since it will be open farther when cold. if that doesnt make sense, try explaining hte noise a little better. i really dont think its anything to worry abotu if it only does it when cold.