Exactly.CamKing wrote: ↑Wed Sep 29, 2021 11:31 am We proved half a century ago, that injection is far superior to carbs, and that was with mechanical injection.
In the 90's EFI became superior to mechanical injection.
It's not even up for debate.
Carbs are great for the cost, but when cost isn't an issue, it's not even close.
A Pro Stock system, no rules, would be a 1500+psi system (Honda's F1 fuel injectors flowed 160-ish lbs/hr at 1450psi rail pressure (rules limited), 15 years ago, so the flow rate is there), with the injectors moved up and pointing down into the port from the bellmouth. It wouldn't even be close performance wise vs what they had or have now.
Note: NHRA Pro Stock has to use spec 160 lb/hr injectors. So essentially the same flow rate, but with 90psi rail pressure, and located in the runner.
As Honda found, the higher pressure allowed for shorter injection duration, which drops intake temps further, plus the smaller droplet size. Also the fact that the fuel is expanding from 1450psi+ to below atmospheric.