Nice vid man. The car sounds real nice (love that SC whine). I have to say that the piping (and the setup in general) looks really good. You mentioned it but the throttle bodies slamming shut when you completely let go of the throttle is just choking your engine and making your SC unhappy. I think the idea you talked about with adding more air behind the second throttle body would improve both your idle and maybe ease the ramp down in rpm. If not then you could try the mechanic stop to keep one TB a little more open. The bypass fully collapsing probably doesn't help. I thought I read that you had switched it completely to a hard pipe...I must have misread. Anyway, it sucks you need a new cable but it's nice to see it running.
As far as that sound system...I've never really been into them but I can appreciate a nice system that makes your nuts jiggle.
Happy late bday btw.
Sent from my Nexus 6 using Tapatalk