I had to run the car with NO exhaust to get it out of the garage and onto the flatbed to get it up to the shop who was going to fit up the exhaust. The Tomei Titanium 4" is practically a straight pipe - there is a muffler at the end, but it's pretty damn open. 6266DBB turbo dumping right out the downpipe was Gates-of-HELL loud. Holy crap.
When I picked the car up it was almost as loud ! Well, seemed that way. Definitely too much for civil driving about town. With the Tomei baffle in place it was genteel, but you can't run that thing for more than idling around. Hence the need for ... something. Hence the Apexi Active Silencer. There's some discussion about the tip silencers etc here
https://www.supraforums.com/threads/exhaust-with-tip-silencer.1125621/
I'm also getting a Gesi 5" cat (G-Sport 85500) with a pair of 4"-5" transitions to insert into the midpipe. Need to do my part for the environment, right ? Plus it will cut the sound down as well as the smell, so win-win.