Test ride today after welding it back together. No noise increase over my Akra open Ti slip on, feels like it has a real hit off the bottom, pulls the forks to top out harder for sure. I can't feel any "jetting" problems, fuels just as well as stock. No popping on decel, maybe a slightly louder burble when you just touch the throttle on decel but no real difference there.
All good and it cost me a lunch for my buddy and under 30 minutes total wrench time.