Good morning Folks,
For what it is worth, I run a SS 2 into 1 on my Sportster 1200 S and it is a blast, I changed out the closed end for the open racing only tip and removed 5 disks (6 recommended). Pipe was still quiet under normal riding conditions but crank it on and you will get attention. The sound is unique and not unpleasing, definitely feels stronger. When I get around to building up the 88³" Dyna, it also will get a Supertrapp in black ceramic. Just waiting to see the results of Gremlish's test on an Andrews 54h cam and waiting to find the true specifications of this cam. Overall, best bang for the bux of any pipe IMHO. Hope this helps,
Best to all,
Pixs