I am running a Delta rear bumper. If I had a plastic bumper, I think this routing could pose more of an issue. As it is now, the exhaust routes to nearly the edge of the bumper, so most of the exhaust gas flows out the side or up through the wheel arch (when the vehicle is stationary). One of...
My solution on the tailpipe, if it is of value. Tried running without the rear resonator, but the whistling drove me crazy. Ended up reinstalling and rerouting. Very happy with the outcome. Aside from the stainless turndown, all the tubing is reclaimed bends from the factory system.