Interesting, he seems to have started with ITBs and is trying to add the benefits of a long runner inlet & plenum arrangement. It's essentually the same as my idea, but he's approching it from the opisite starting point.
The venturi and link pipe idea is interesting too, however, I suspect whatever he gains from drawing air from the other velocity stack will be mitigated by the restriction the venturi introduces. I'd also speculate the link pipe diameter he's chosen is way too small for meaninful flow, and even if they were a larger bore, without check valves he'll likely end up with some very unwated behaviours.
On Monty, I'm starting from the oposite end of tge same design challenge, I'm starting with a long runner inlet & plenum that works brilliantly up to 5,250rpm where most driving is done. Monty's FF inlet does seem to start become a restriction above 5,250rpm, we can see this restriction repeated exactly at 5,250rpm in both the Stage 2 and Stage 3 dyno graphs, so I'd speculate that's not a coincidence!
In a way, what I'm proposing is a lot simpler than what the guy in the video has come up with, I'm taking my proven long runner and single 60mm TB setup and letting it do it's thing without any interference whatsover from idle to 5,250rpm. From 5,250rpm to 8,000rpm the air can still pass through the wide open 60mm single TB, but now the each individual cylinder will also recieve progressively more and more air from it's secondary source, i.e each individual small choke motorcycle throttle body.
As the motorcycle throttle bodies also have four injectors in them and my EMU Black can control 8 injectors using staged injection, it seems rude not to take advange of these features too. In theory, top end throttle respose should come alive and the additional air matched by the extra direct injected fuel will allow Monty's Duratec to keep making horsepower from 5,800rpm, and all the way out to 8,400rpm where Stage 4 Monty should make 220hp plus
.
Key to the idea is because nothing actually changes with Monty's Stage 3 setup from idle to 5,250rpm, Stage 4 Monty will behave exactly as Stage 3 Monty does upto 5,250rpm. However, after that he'll do what we all know he's capable of if I'd just followed the herd and fitted a set of ITBs, like many said I should have done from the outset.
What I like about my idea is, in theory, it should give me the best of both worlds. Unlike going full ITBs I also keep my idle valve and the OEM cold starts/idle managent it gives. Finally I keep my map sensor, so I continue to tune in speed density which in my experiece always gives better drivability than the compromised Alpha-N strategy that would be forced on me if I relent and go with a traditional ITB setup.
