Originally Posted by L79vette
With your TBI, you should be better off mounting them on the normal plenum. With TBI, you get excellent atomization and distribution, even with the large plenum.
Atomization and distribution is the key to driveability - that is why I divided up the plenum. With carburetors, you need velocity through the venturis to get the metering to be correct at low RPM. But with TBI, the computer calculates the injector pulse width based on MAP and RPM - you don't need velocity through the throttle body to meter the fuel.
All that said, I have not built what you are talking about, so if you do it, let us know how it works out!
I don't claim to be an expert, but I'm sure that I read that the reason why all TBI engines came stock with some sort of swirl function in the intake track (IE in the bowls of the heads on chevys) is because TBI produces such poor atomization?