oh no.. i wish i would have seen this thread a few days ago 
i thought i was hearing an exhaust leak on my HKS too.. i inspected the connection at the axle before and didn't see anything.. now that Mike you have pointed this out, I went out to check mine as well.. and guess what. see pic.
car has 18K miles on it.. exhaust has 16K - 17K on it.. recently upgraded the front motor mount (awr) [ rear one will be installed soon ] .. still have the stock exhaust mounts..
looks like i'm off to get this thing welded (unfortunately for me, i don't have a mig in my collection, or the skills to use one.. hahaha)
i thought i was hearing an exhaust leak on my HKS too.. i inspected the connection at the axle before and didn't see anything.. now that Mike you have pointed this out, I went out to check mine as well.. and guess what. see pic.
car has 18K miles on it.. exhaust has 16K - 17K on it.. recently upgraded the front motor mount (awr) [ rear one will be installed soon ] .. still have the stock exhaust mounts..
looks like i'm off to get this thing welded (unfortunately for me, i don't have a mig in my collection, or the skills to use one.. hahaha)