Getting a loud exhaust noise when starting up vehicle. It quiets down after a few minutes at idle speed, but gets louder when driving. Hard to see exactly where it is coming from, but sounds and feels (feel some exhaust) from upper side of turbo area. Have not taken out the heat shield to investigate further yet, but I thought perhaps someone may have a suggestion about what could cause this? Is there an exhaust gasket in that area that may need replacing? Thanks!

 

Remove the heat shield and check for cracks in the turbo housing, or one of the three fasteners holding the catalytic converter pipes to the turbo housing.

The heat shield is held in place by four 10mm bolt heads.

 

Thanks! I did remove heat shield and it turned out to be a broken exhaust manifold gasket that slipped out of place. Replaced all gaskets and solved the problem. Thanks for your reply!