This has been bothering me for awhile and a buddy of mine referred to this, as it might be the culprit for my problem. Since I had the head gaskets done the other year, I have noticed an exhaust leak sound. I have had my exhaust redone which did not resolve that issue, so it still remains. Is it possible that the egr got damage or is cracked causing the sound I hear? I tried looking for a bad seal for the manifolds but did not see any. Any ideas? Wasn't sure if this should be placed in the exhaust thread or not. Thanks.