Carb to EFI hp gain?

[chr2002ca]

Originally Posted by supremeefi

Otherwise your info is correct but that statement isn't.
Pro Flo XT's etc aren't for every application. If the rest of your combo isn't well mated to the power band that intake will provide you may actually lose hp/tq.
I've seen measurable gains on mild builds by doing multiport EFI on dual planes, have one on my car. I started out with an EFI'd single plane intake, went to a dual plane modified for EFI and the difference was night and day, from idle to wot. The added runner length and/or smaller plenum area proved beneficial, the exact opposite of the Pro Flo/Mini Ram type stuff.

Opinions and results vary. All depends on your setup, as you mentioned. I should've mentioned that.