Running a full AWE TBE (track, not touring) and I’m GIAC stage 2. I’ve had the CBE for 2 years now and the DP for a few months now. Personally the CBE was too quiet and didn’t change the exhaust note at all, which I guess is to be expected. With the DP it became much deeper, but still feels a bit quiet and not as deep for my tastes. Idk if that has anything to do with the fact that it isn’t a full 3” system all the way back. CTS and Unitronic definitely seems to make it deeper and louder but the quality of AWE is amazing. Stainless steel all the way and no CEL, at least with the stage 2 tune. Pretty happy with it.