Just to jump in here, would having a dual TB setup possibly provide a more balanced power distribution? I was think that if tuned correctly that it would pulse more air into the engine, Lets say you have cylinder 1 and 3 connected to the same TB, when cylinder 1 is closed it will produce a slight increase in air pressure and create a good wave pattern all the way up to the air horn which if timed correctly cylinder 3 can take advantage of when that valve opens very shortly after cyl. 1 closed. I would imagine this kinda of tuning would work over a broader range then with a quad TB setup and tuned runners and maybe give more HP. Any thoughts?