Re: Exhaust leak or HEMI tick?
If it is loudest at start up when the manifold is cold, then it would be an exhaust leak, othewise it could be the lifters or EGR. It's easy, takes about 20 minutes and $40 (advanced auto, Autozone, etc.) to swap the EGR, and I would recommend doing this by 60k anyway. If that doesnt cut it, use Seafoam in the oil, which will free the lifters up in about 100 miles, (change the oil ater this) also put it into the gas tank. Read the entire thread on EGR, and dont follow the OP's advice, as there is no need to cut the bolt; just rotate the EGR all the way to the left after removing the top bolt to get plenty of clearance for the bottom one to come out and go in.
2006 GC Overland QD II
5.7 Hemi, Modern Muscle 85 mm CNC ported TB, Apexi super voltage stabilizer, Billet Tech. Catch Can, Koni FSD shocks/struts, SRT8 sway bars, Cooper AT3's, Amsoil fluids, Diablosport Intune CMR tuned by Hemifever tuning.