Environmental psychology addresses environmental problems such as density and crowding, noise pollution, sub-standard living, and urban decay. 1  Noise increases environmental stress.
Hayapower is correct. The tube from the converter is for the smog pump (air injection) for the catalytic converter. The EGR tube comes off the passenger side exhaust manifold. Disconnecting the tube from the converter will not hurt if you remove the conveter and close off the tube end or leave it open.If you leave it open then at times you will hear a pumping sound from the tube caused by the smog pump when it reaches proper temperature.t's thermactor/secondary fresh air injected from the smog air pump for converter/catalyst secondary burn/conversion.. Disabling/restricting an EGR flow (drastically), can/will result in a DTC.. The tube is needed for a fresh air suppy to the converter..
-replaced pre and post o2 sensors on Bank 1 (OEM DENSO BRAND NEW). -replaced catalytic converter with aftermarket weld in style (didnt work). -since aftermarket cat didnt work, i purchased a used exhaust manifold w/ 12k miles from a friend who switched to headers.cats look almost brand new.y car was randomly selected for a smog lab inspection by the DMV in order to reinstate my registration, however i have a CEL that keeps recurring P0420 (Catalytic converter efficiency below threshold BANK 1).