Just finished Borla install. I must say does sound better after 5 minutes of driving it than I thought. But a couple thoughts. I don't like that the pass side needs a lot of tweaking that i could not achieve here at home. I'm going to have to bring it in to center it on the cutout.
Also after install I removed the bubble wrap on the tips and found a nice chip on the edge. As soon as I touched it more chrome kept flaking off. Now I did call Simmitt and they said they will send another set out so now I have to install again. Overall, I would say it sounds way better than stock but Borla could have designed the hangers a little better for fitment. The hangers at points barely hold the stock rubber grommets.
Even my girls were helping me...lol