So I got the SPT Cat-Back for free from my dealership as compensation for some paint flaws. Ideally, I would like something a little louder, but for $0 I can't really complain. ;D So now I'm looking into my DP options and I wanted to know what the sound is like on anyone else's who has an aftermarket DP on their SPT exhaust. Just reading about the DPs I'm leaning towards Cobb, but I'm not sure as to how loud it is. Any help would be appreciated!