Greddy exhaust installed:
It sounds very nice. Not objectionably loud, keeping it classy with the sound level. All of my audio impressions are from inside the cabin; I'll have to have someone take a video, or at least stand by as I drive past. The idle tone is very prominent, letting you know what the engine's doing at low RPMs (which is what I was missing; I found myself stalling out once or twice when backing into parking spaces at car shows, because I couldn't hear the engine note). At mid to high RPM, it sounds very complementary to the intake sound being piped into the cabin through the sound conductor. What I was hoping for was a way to "share" the interior cabin engine note with the world, and I think this achieves it nicely.