I think it is a case of having both injectors serving the fuel needs all the time. I believe Cliff, LoTu5, from London has this set up on a 418 cu in motor. I don't understand all of the theory behind it. I guess you eliminate all those secondary parts so they can't fail on you?
A thought...I would guess when the motor gets on the cams the transition is less dramatic? I mean nothing is blocking the air flow thru the other ports and the injectors are already adjusting the A/F ratio so the big power is just there all the time?? I'm wondering if those cars must feel like an old rat motor from the 60's & 70's? I once drove my friend's 396/350 camaro & it was way different than my LT-1. The 396 felt like a stump puller from way down low in the rev band where the sb needs to get some revs up before anything happens.
Tom