they're talking about the resonator located half way between the airbox and the throttle body. Zetecs have these, but Duratecs don't. The resonator is there the IAT sensor is and the purpose of the resonator is only to make the sound of the intake more quiet. The resonator also gives information to the computer about the intake temp through the IAT sensor.


DemonOfSteel 98 ZX2 Sport 98 Contour SE