I just installed mine yesterday.
I have a sport+touring 7AT. My mods are K&N drop-ins, MAF tubes, and now the TDX 18" with CF resonators. I have a light touch from riding motorcycles and I can tell there is a definite power increase. Coming out of my neighborhood, I am used to a specific amount of gas to get me to the center median and the car surprised me when it moved a lot quicker than I am used to.
I have some professional recording equipment. I will try to get a good sound clip sometime next weekend for others to reference my specific setup.
One more thing, looking at RangerZ, I'm amused at how similarly we're both setup. We both have similar mods, near similar TDX orders (CF cans with resonators, but he has 12" and I have 18") and we were one digit away from one another in the orders.