I've only got a single out sport exhaust, and my car is just the way I like it. Seriously, when I removed my sound deadening pad, I couldn't tell that much difference, so I'm not sure adding one back (in your case) is going to make the sound tolerable for your wife. Maybe you should try blocking off the second outlet (when she's in the car) first to see if that is a solution. It'd suck to install the sound deadening (a real PITA I'm sure) just to find it doesn't compensate enough for your dual exhaust...hey, they're 'sposed to be loud
