Hi Guys

I go ta 2009 g37 journey sedan,

I am getting an odd engine sound when driving at 60km,....

It's an automatic but when i move to DS mode and leave it in 2nd gear and forget to bump to 3rd the enginve rev's really hard

This is the type of sound i am getting from transmission when in regular automatic mode.

Is there any other people similar problem?

or what's your suggestion?