startup noise

I just purchased a used 02 360 with 2500 miles on the speedo. When I start it up there is a strange noise, sounds like exhaust. My porsche did the same thing, like there is something loose in the muffler. On the porsche this is a common noise is this the same with a 360? Thanks in advance

 

It sounds more mechanical rather than exhaust. It lasts about 10 to 20 seconds and goes away, this happens only from a cold start. The car has a F1 transmission could there be a sound from it coming up to pressure? I know the sound when I open the door the F1 motor turns on for about 10 seconds, and this is not the noise. I hope this is normal, any input. Thanks in advance

 

This is the noise ...Thanks guys... this is my first Ferrari and I am still paranoid about certain noises