I have a exhaust leak from my manifold to my J pipe connection. The strength of the leak is like blowing on the palm of your hand while the engine is at idle.The leak is at the pipe manifold joint. Is this a common area for leaks on the 4 Tec's? Is some leakage normal? My engine tops out at 6800 rpm with this leak running I suspect I will get a power/speed increase after I fix it just fishing for thoughts and tips. With my wife and I on the ski right now we are only hitting 45 MPH.