Flowmaster Outlaw on Challenger is a beast!
Stock Challengers are way too quiet for a muscle car, so I deleted the resonators. The sound without the resonators was a big improvement, but after awhile I wanted more. The Flowmaster Outlaw Catback system was just what I wanted. There's a nice rumble at start up and idle, but when you stomp on the gas it just roars. Installation was straight forward and took about 3 hours for removal and installation. My Dewalt XR impact gun made installation a breeze.
16 GMC Canyon V6
On the plus side, this system was easy to install. It sounds great on start up and at idle. On the down side there is a lot of drone in the 2k rpm range, so pretty much all the time during driving. Also for the price I figured the whole system would be made of stainless steal. It isn%X92t, only the muffler and tailpipe are stainless. That%X92s a big disappointment. Overall take; spend a little more and get the Borla instead.
Borla S type
I purchased the exhaust based on the item description. It specifically stated it was the middle of the product line as far as loudness. It also said there was no droning. The exhaust sounds good on the outside but it drones badly inside the cabin. I didn't find out until it was installed. It's too loud for my application.