No problem. Yes, I do have the full cat-back exhaust system (Section 1 Y Pipe, Section 2 Cat-Back Mid-Pipe & Section 3 Cat-Back Mufflers). On the cold start it has the Ferrari/Lamborghini sound in my opinion. GTHAUS states that there will be some hp gains around 20-30 hp, but you will not see all of it as in CAI until you have driven about 120-150 miles with the new modes on. I babied my Nismo for the first 1,200 miles. I never went past 4k rpm's & never went past 80 mph. I usually avg. at 3-3.5k rpms & 65-70 mph. I can say this for sure is that the sound has changed night & day. I might get a dyno sometime in the near future.
All right ladies here are a couple of video clips. Oh please see the two links below that I made today regarding the Meisterschaft exhaust sound. The first link is a cold start-up while I am reviving it, but didn't pass 7k rpms. The second link is while driving with windows up, having rpms not past 7k, and never breaking the speed limit.
The first video is my favorite.........
2012 Nismo with GTHAUS Meisterschaft Full Cat-Back Exhaust System Part 1 - YouTube
2012 Nismo with GTHAUS Meisterschaft Full Cat-Back Exhaust System Part 2 - YouTube