How can twins make 700 but a single can't?
R U Serious? Are you asking how a twin turbo charged set up can make more power than a single charger set up, on the same amount of fuel? Or are you asking how a given pump can be in different turbo set ups and achieve different power levels, or what?
Twin turbo's, when set up properly, make more power off less fuel, period. I don't know the exact science of it, I'm just a carpenter, but it's no mystery that twins will squeeze more power per ounce of fuel, they push more air, and that makes all the difference.
Mark Broviak comes to mind, not too long ago he was chasing and attained the title of highest whp on a single cp3, just by adding twins, and iirc, not changing his tune at all, he put down something like 200 more whp, I can't remember exactly how much more hp, maybe it was only 100 more whp then he changed the tune and got 200? the thread is on this forum somewhere...I can't explain it, but there is just one example of twins making more power off the same amount of fuel...come to think of it, Mark has now upped his game to triples! So I bet he has even further pushed the single cp3 power level bar to new heights