removal of it on 4AFE is pretty easy as the manifold plenum is bolted with socket head bolts, remove it and remove the fuel rail, place aside, now get your slim ratchet set and get to work removing the nuts and bolts on the bracing.
extract from engine, undo throttle body and then its hot water, soap and brush time - you will become quite dirty after its cleaned.
The 4AFE keeps its intake pretty clean - the problematic engines are the Hyundai Santro intake manifold - it literally gets plugged with junk and needs a good cleaning.
The other major pain the behind engine for manifold gunking is the toyota 1KD-FTV and all mercedes benz CDI engines, they load the manifold with "koyla" and require a good cleaning with some proper nasties.