New car and new to nissans plz help

[fakieSI]

Ok I just got my 1997 240sx and I am really new at the whole nissan thing. I didnt think that it would be to different from hondas but I am begining to find out I was mistaken. The car was originally a auto but was converted. I am throwing several CELs keeping me from passing emissions. I pulled the codes today. Keep in mind I know the guy did one of those stupid egr deletes so I know thats what half of these are for. I am currently hunting down everything I need to fix that. But I have no idea what the other codes are for. Please any help would b greatly appreciated.

p0400 egr flowp0440 evap emission control malf.p1615 manufactor specificp0141 02 sensor bank 1 sensor 2p0446 evap emissions control circuit malf.p0705 trans range malf.