PickeringES300

just wondering if anybody knew how to remove the grill connected to the bumper for the 94 model, and the grill connected to the hood. any help would be appreciated.

1994

i just recently tried to replace the air filter with a performance air intake filter made for an IS300 and custom piping. when i replaced the air filter, the engine light came on. now i placed the stock filter/pipe the light remained on. how do i reset it? and is there a way to upgrade without setting some sort of sensor off?