STI Forums IWSTI Engine Drivetrain 2. Does anyone know what is the purpose of the air pump of the 07+ STi? Used to eliminate air pump and related valves found on 20WRX and 20WRX STI.
Subaru Secondary Air Pump Secondary Air Valve System Subaru. The ECM monitors the secondary air injection system and detects the malfunction using a pressure sensor located on the air switching valve. The ECM observes the pressure in the secondary air passage using the pressure. My mate who I sold my Forester (MYXT) to has had a Check Engine Light come on and Subaru has said the problem is with the Air Pump .
Hi Can someone please tell me about the secondary air pump issue with the. And the reflash gave me a faster, better driving car that uses no . Subaru-WRX-Forester-STi-Secondary-Air-Pu. To meet the ever more stringent emissions targets being placed on . That is the air pump to handle emissions when the car is first started and the engine is cold.
It replaces the function of the catalytic converter in . Nov 20- Got my wrx back yesterday after having the 'Secondary Air Pump.
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