thanz evryone for da info..my fren xplained it to me oredi..its an air flow sensor..if dun 1 to use that its a must to have ECU like haltech,microtech to set the air sensor..seems dat im using original ecu so i need to use air flow sensor..ahahh..saw those cars wif oni ram connected to the turbine..actually they r using stand alone ecu i din even kow bout it