Is a K&N air filter worth putting into my '02 2.7T?
11-17-2005, 04:44 AM
#1
AudiWorld Senior Member
Thread Starter
Join Date: Oct 2005
Posts: 857
Likes: 0
Received 0 Likes
on
0 Posts
Is a K&N air filter worth putting into my '02 2.7T?
How much should I expect it to cost me? What is the gain in hp from swapping out the stock air filter and replacing it with a K&N?
11-17-2005, 04:52 AM
#2
Cost? Expect it to cost the price of the K&N, then the price a of new MAF and a paper filter.
Skip the K&N. The oil generally results in premature MAF failure and the gain (if there is one) isn't worth it.
11-17-2005, 04:55 AM
#3
Even if K&Ns were NOT known for messing up MAFs, it's just not worth it.
A good, clean paper filter will give you plenty of airflow. I have not seen a single reliable study showing the actual gains you get with a K&N.
11-17-2005, 05:08 AM
#4
Member
Join Date: May 2003
Posts: 510
Likes: 0
Received 0 Likes
on
0 Posts
No data on MAF failure
This is a myth that has no data behind it. K&N has been around for many years. The problem is the Bosch MAF sucks. The Hitachi upgrades are far superior. I have had a K&N fiiter for 80K miles and just changed to a cold induction sytem. And it doesn't do much for performace.
11-17-2005, 05:15 AM
#5
AudiWorld Super User
Join Date: Nov 2000
Posts: 11,069
Likes: 0
Received 0 Likes
on
0 Posts
Nope. No gains. Possible fouling of MAF and they do admit extra dirt compared to the factory filter.
Take a look at this filter test. No K&N for me!
Oh, before you look at the results and say, look how much better the K&N flows... the airbox on the 2.7t is not a point of restriction. It has adequate flow capacity with the stock filter. Yes, the K&N may flow better if the regular airbox filter is restricting airflow but our airbox is well sized for the engine.<ul><li><a href="http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm">Filter test</a></li></ul>
Oh, before you look at the results and say, look how much better the K&N flows... the airbox on the 2.7t is not a point of restriction. It has adequate flow capacity with the stock filter. Yes, the K&N may flow better if the regular airbox filter is restricting airflow but our airbox is well sized for the engine.<ul><li><a href="http://home.usadatanet.net/~jbplock/ISO5011/SPICER.htm">Filter test</a></li></ul>
11-17-2005, 06:00 AM
#6
Eh? I had nothing but problems with my MAF fouling with my K&N... I'd clean the MAF, it'd be fin
for a while, till it'd get all gunked up again. Switched back to a paper filter, SAME MAF mind you, no problems for 50k miles.
