I am Jake and just wanted to clarify a few things about this group buy! I am going to become a site sponsor here soon and Joka/Kevin is a good friend that has helped our business quite a bit! We will be releasing these exhausts however under a new name. The exhausts will be released under the name Packard Design Lab and our site should be on the web sometime in the next couple of weeks. As for these exhausts we do have the Raptor 700 and the YFZ 450 drags and muffled pipes shipping this week and would love to get some in your hands pre-website release. We are dyno testing a ton of different combinations now and can basically say that it makes as much or more than any good pipe out there and weighs less! I know that is broad but dyno sheets will come soon.
As for DB levels to be honest we haven't tested. It for sure isnt for the guy that wants a quiet aftermarket exhaust. It is loud but not too loud that you get annoyed by it.
Anyway group buy stuff should probably go through Kevin until we get on here as a sponsor. Look for some sort of launch give a way/raffle type thing coming soon!