When i throw my car in tiptronic or the manumatic mode in my coupe, i hear a hissing sound almost like a slow leak tire its not really loud but if u pay attention you hear it. Anybody know what it is or can help me out?

 

Hey man I just asked this two days ago! Haha I guess it is the fuel pump. All G's do it! When it first happen to me I was like "shiz this car have air ride too?" haha I was about to bring it into the shop to get it looked at..........