Audi Mass Air Flow Sensor

My Audi Will Not Pass The Illinois Emmissions Test Due To The Fact Of The Service Engine Light Is On. I Have A Scanner And Have Gotten The...

I Am Replacing My Stock Air Box With Cone Filter And Custom Heat Shield. From The Stock Air Box Comes A Hose That Goes Down And...

I Have An Audi A6 Quattro 2.7 Turbo, I Visit The Mecanic And The Scaner Says That I Have The 1 Air Sensor And The 2 Air Sensor Not...