I was able to remove my entire exhaust system by removing the rear wheels to make enough space to pull out the side mufflers. Than the main exhaust wiggled out (bit tight) straight down with some creative manuevering. You should remove the 2 torx screws on the lower rear bumper valance for more wiggle space. Just be careful not to pull out he vacuum pipe out of the valve because its a pain in the butt to find where it came from. Later I found out where it came from and just plugged it with an automotive vacuum hose plug. So in case you were always wondering, it can be done without taking off the rear bumper, saves you HOURS of time.

 

Nicely done!