Interesting Tech- Yoshimura Duplex Exhaust

Some time back before I was around, a company called Yoshimura R&D was "in bed" with Suzuki (and still is!).
They teamed up for various racing circuits around the world. From the AMA Superbike class to the 8 Hours of Suzuka.
Pictured below is the Suzuka bike:

Lots of innovations in these race winning models made it onto the street. Back in the day, you could buy a multitude of parts from Yoshimura which were close, if not direct, replicas of items used on the race bikes. Swing arms, exhausts, cam chain tensioners, specialty air boxes, foot pegs, number plates, the list goes on. If you had enough deep pockets, you too could have a nearly exact replica of the legendary bikes ridden by Kevin Schwantz and other greats.

One interesting bit of kit was Yoshimura's "Duplex" exhaust system. The header unit had these bizarre looking canisters on it, see below:

I offer you a quote direct from a Yoshimura catalog: .
                   "The purpose of the duplex canisters is to collect some of the exhaust gas not used under hard braking into a corner, which is then released from the duplex canisters when you get back on the throttle as you exit the corner. A special hand built collector speeds up exhaust to provide a smooth transition from low to mid to full throttle"

Did it work? Perhaps. Perhaps not.
For what it's worth, new Yoshimura exhausts for Suzuki GSX-R models do not have them. 

Coincidence or forgotten tech?

You decide.