Nice deduction, Stan. I never thought to look at the build of these units. I will tell you-QS sounds very different than the stock exhaust. The pitch, growl, backfeed, all of it. It sounds kind of like a different car.
Stan, the autoX on the 24th has been postponed to the 31st, and I don't think I can do that one. I will update. Are you wandering through the area any time soon?
I will scour the autoX boards for another meet, and get back to you. There's still a chance I'll go to the 31st meet.