I just got a CP-E. I have the depo catless and had just the stock muffler before this. It is louder in every sense from what I had before. It is louder inside than what you would expect with how relatively quiet it is outside the car. (Read this as, you won't get in trouble with the cops but people will know) you can tell that the resonator does its job. It has a little low end growl as you move up in rpm (not under load) and when you get above about 1.8k rpm till about 3k rpm there is almost no exhaust noise when cruising. Above that it can be completely down out with the radio at half volume. It is loud but not unbearable over 75mph. Like I said for a form of reference if your radio is at or above the middle marker you won't hear it even at 80.
+1!
I have their Nexus system on my car with everything else factory, save for a GFB DV+
I REALLY love the sound, and always get compliments on it (even from the tuner shop owners/workers in my area).
I would have gone for this exhaust
even if it meant that I
lost a couple of ponies here and there in the power curve (due to it being a 3" system attached to a tiny factory DP/turbine outlet)!!
Better looking as well than the anemic, tiny chrome/stainless factory outlets/tips, especially in the black Cerakote I did on the tailpipe/tips.
(But I can understand wanting to keep those, and a relatively quiet factory system, for 'stealth' reasons on a big power setup.
)