Sounds like I have a cracked exhaust manifold or at least some broken bolts. I repaired the right side leak about a year ago and now it sounds like the left side. Pretty sure I am out of warranty with 94K miles so I'll be considering a set of shorty headers this time. Comments welcome. Any reason not to install shorty headers and if you are running a set of headers, what brands have been the best? Looking for ceramic coated headers.