OK, installed it today annnnnnd... it leaks. Well, the 3rd cat replacement pipe leaks. The flange is warped, so I gotta figure out wtf I'm gonna do for that.

Sounds nicer though, same tone but louder, which is what I was hoping for. Reset the ECU so it'll learn around it. Under-hood heat is definately decreased now that all the exhaust that can dump heat in there has been coated.