exaust leak
 

When i start my car up under the hood all i hear is a little like puffing sound that is very annoying, do i have a leak in my stock manifold gasket? i only have sri, catback exaust, no headers and no headers money right now, so could i just buy a new gasket to stop the annoying noise?

RE: exaust leak
 

it goes up and down with rpms, right? but if its an exhaust leak, it will just start to sound like crap, not so much a puffing sound.