linking carbs using the balance pipes

[Falcon 269]

This started life in the States, pushed hard by some nutter on the FZ1OA forum, but based on the YICS or whatever it was that Yamaha fitted to some of their bikes in the 90s.  This version for the Fazer was the source of endless debates and futile attempts by the 'inventor' to show significant torque gains and elimination of vibes.  I tried it (both versions) out of curiosity and found it made no difference whatsoever.

I guess the placebo effect applied for some owners but as has been said already, a carb synch, a proper service and a bit of TPS tweaking would be much more effective.