K&N sport air filter vs regular air filter I My experiment on my BMW e46I Autobahn test drive

In this video you will see an interesting experiment I did on my car to check if the K&N sport air filter will give more power to the engine or not. My experiment will based on: - Measuring the amount of air (using a diagnose device) - Checking the fuel trims ( before and after installing the K&N air filter) I drove the car also at high speeds on the Autobahn to see if there is any additional power brought by the air filter. The results: This type of filter from K&N brings nothing (or nearly nothing) at least I didn't feel a difference. Also it is expensive and needs a special care (washing and spraying with oil). For more details watch the video and I will be glad to see your comment. The type of filter from K&N: 33 - 2231 Car: BMW e46 Touring, 2004, M5422 engine, 194.000km

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