Originally Posted by beenen

Well I disconnected both of the valves in the muffler yesterday and drove fine for me first part of the day. My wife ended up taking it out on her own and I got a call from her later that day saying the check engine light is on and its shaking (misfire) and proceeded to yell at me saying "Quit modifying the car!" Guess I didn't get as lucky as some of you.

Shame because I for sure heard a difference with them unplugged. I am starting to wonder if her leaving it in comfort mode instead of sport mode had anything to do with it. Wild that just a little exhaust valve will do that.