Everyone above is in agreement and right on the money (how could this be

)? Custom tune by far the best bang for the buck. And even though I didn't buy my Cobb exhaust for the gains, I love it everyday I drive the car for the sound and looks. So for me this was a worthwhile mod.
I've had many an aftermarket exhaust on my cars over the years (Corsa being my all time favorite) and a good sounding exhaust is worth some hp to me, even if its in my mind

. Makes my drives more enjoyable.