Maybe I've watched too much Engine Masters, and am just an internet wizard now.I thought a single plane gives up torque because of the slower air velocity thru larger passages hurts fuel atomization at lower speeds; is this correct? If so there would be no effect on multiport injection; or I could be mistaken.
Honestly, I have seen where they use multiport and do nothing but change the runner length, and the shorter runner give up torque. The physics of the air speed in single vs duel plane and torque curves does not change because of the use of MPI. It is about the shape of the intake itself, as well as runner length combined. As I said, throttle response is better because of better atomization. Now, an interesting effort to get both the advantage of both short and long runners is Mopar's SRV (Short Runner Valve) intakes on newer Hemi's. They use the longer runners at low RPM's, then switch to a set of short one at the top end. It's pretty ingenios actually. You may know all this, but I thought some may not.
Please let me know how it works
