K&N Drop-in for M272 Made So Much Difference
Senior Member
Joined: Jan 2011
Posts: 283
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From: Metro ATL
2001 E55 AMG (sold)
A few years ago when I was into sport bikes, I was heavy into one of the biking forums. They had an ongoing debate there on K&N vs stock paper. If I recall correctly, there was some scientific document that showed the K&N not filtering nearly as effectively as a normal stock filter, and it did not flow considerably better. With my car, I'll stick to stock Mann filters or similar.
K&N might have had a huge advantage in the old days when stock paper filters were really restrictive, but modern filters flow much better.
K&N might have had a huge advantage in the old days when stock paper filters were really restrictive, but modern filters flow much better.
Member
Joined: Mar 2008
Posts: 96
Likes: 3
Mercedes Benz c230
Two reasons:
1) There are certain things that are less reliable in the long term. In this case, many aftermarket filters normally filter less to allow more airflow. For a stock car, most non-enthusiasts will not care about the performance increase but will care about longterm reliability.
2) Cost. Every penny counts when building a car, and the best-unit-per-dollar rules all.
1) There are certain things that are less reliable in the long term. In this case, many aftermarket filters normally filter less to allow more airflow. For a stock car, most non-enthusiasts will not care about the performance increase but will care about longterm reliability.
2) Cost. Every penny counts when building a car, and the best-unit-per-dollar rules all.
Butt dynos are unfortunately what most of us have. Renting Dyno time isn't in most people's budgets. This discussion is more about opinions b/c if it were fact, discussion would be over. If you have a dyno indicating one way or the other, we'd love to see it. Otherwise, may the discussions continue.
MBWorld Fanatic!
Joined: Feb 2009
Posts: 5,537
Likes: 8
2006 C350 Sport 6MT
Exactly, especially point #2. That's what I keep telling people who question it, but no one cares. Oh well.
Butt dynos are unfortunately what most of us have. Renting Dyno time isn't in most people's budgets. This discussion is more about opinions b/c if it were fact, discussion would be over. If you have a dyno indicating one way or the other, we'd love to see it. Otherwise, may the discussions continue.
Butt dynos are unfortunately what most of us have. Renting Dyno time isn't in most people's budgets. This discussion is more about opinions b/c if it were fact, discussion would be over. If you have a dyno indicating one way or the other, we'd love to see it. Otherwise, may the discussions continue.
