To get near those figures you basically need a well thought out setup with every base covered. Not all race parts for 16g stuff, but pretty much every mod that can help with power production on a 16g. For a setup to max out an Evo 16g, something like- front mount, turboback exhaust preferably 3", 650cc injectors, 264 or FP1 cams, ported/tubular mani/turbo/o2, something like a 2g maf or maf-t, and good tuning with DSMlink or standalone. Maybe an extrude honed intake if you have the cash. Then you basically crank as much boost and timing as you can out of it on C-16, probably 30 psi falling to 24 or 25 on an Evo 16g.