K&N continues to improve vehicle performance through its continuous production of new air intake systems guaranteed to increase horsepower and acceleration. K&N’s air intake (69-9505T) for 2009 and 2010 Audi A4, A4 Cabriolet and A4 Quattro models with a 2.0 liter engine is just another example of K&N’s dedication to outstanding performance. The Audi A4 is an entry-level luxury car with elegant styling and sharp handling. The 2.0 liter engine however, lacks the power one would expect from such a prestigious car.
K&N product developers looked at the restrictive factory intake setup of the Audi A4 and immediately knew they could achieve more horsepower. “Along with a body change in 2009, the Audi A4 air box was also relocated,” said product manager Bert Heck. “We had to start from scratch. Our ultimate goal was to get as much power out of the vehicle as we could without affecting the drivability of the vehicle. Older A4 model designs made doing this very difficult.”
Development began with the testing of varying intake tube diameters with the mass air sensor installed in both the tube and in the factory mass air housing. After a series of testing sessions and design changes K&N engineers came up with a design that met all goals.
“With the limited space and use of the factory mass air housing, little space was left for the air filter,” commented Heck. “We had to eliminate the intake tube and design a custom hose to replace it. This saved space and allowed for a larger K&N air filter.” The air intake’s filter, part RF-1047, is a cone shaped, high-flow air filter that provides excellent filtration, outstanding engine protection, and less restriction than the factory air filter.
A custom heat shield was also designed as part of the 69-9505T intake. It helps to reduce the amount of hot engine compartment air going into the engine. It also utilizes the factory fresh air inlet to direct cooler outside air into the air intake.
K&N’s comprehensive testing of the 69-9505T utilized three test vehicles with approximately 100 dyno pulls, road testing and computer monitoring. The final result showed a power gain of 18.14 horsepower at 4435 rpm with the use of K&N’s 69-9505T air intake system.
Installation of the 69-9505T air intake system is easy with K&N’s photo illustrated instruction sheet. K&N’s 69-9505T air intake system typically installs on 2009 and 2010 Audi A4, A4 Cabriolet and A4 Quattro models with the 2.0 liter engine in 90 minutes or less with common hand tools.
For more information call “1-800-997-TINT”