The vapor in the fuel tank is wasted, EVAP is an attempt to save it, charcoal canister stores the vapor.
This vapor is later used as fuel in the engine.
as suggested above, can u plz check if the engine is swapped or not? u can check it by knowing the engine number stamped on the block, if its 2nzfe then original.
other way is to tally the engine number with book if its same as original number printed in book then its 2nzfe.
the intake mani is same for inz n 2nz