toyota needed power
LC Engineering sells a complete filter kit that replaces the stock restricted air box. Also a cam upgrade without a doubt helps. makes sur you degree the cam. If u can get the head shaved a bit to raise compression helps. I have a 93 5 speed 22re with ported polished head...
that part should be available from the local toyota dealer. when installing make sure to clean both mating surfaces with wax and grease remover and use 3m urethane adhesive to glue on. also lubing the regulator gears with white grease won't hurt.