2004 Audi A4 Cold Air Intake. So the boost is the same the air temp makes a big difference. The surging is bad when the engine is cold and not at optimum running temperature.
Audi A4 18L 2004 Magnum Force Stage 2 Aluminum Black Cold Air Intake System by aFe. Replaces restrictive factory air intake system. A cold air intake is the best power accessory for your Audi A4.
2015 - 2016 Audi A4 Komfort 4 Cyl 20L.
Such as increased horsepower and torque faster acceleration improved throttle response and engine sound. The aFe Stage 2 Cold Air Intake System replaces your entire factory air intake system with a large high-flow aFe air filter open element. 2015 - 2016 Audi A4 Premium 4 Cyl 20L. Aftermarket Audi B6 A4 Intakes 2002-2005 Have the itch to begin modifying your car.