Rough start
 

I have a 2014 Maxima SV. I got it two months ago with 2600 miles on it. When I start it up after it cools, it sounds kinda rough to me, then after a few seconds it gets quiet. The car only has 9,000 miles on it now and they are all easy miles basically highway. I run Amsoil Signature Series 5W-30 and I dont what I consider beat the car. Haven't even got on it half throttle yet. Does everyone else's sound like this on start up from cold? The car runs amazing! Couldn't be happier with it. Just like to hear from others on this with similar years. Maybe I worry to much. Idk. Any feedback is appreciated. Thanks in advance!