View Single Post
      02-26-2013, 03:10 PM   #65
4corners
Captain
 
4corners's Avatar
 
Drives: 2008 Jet Black M3 Coupe
Join Date: Feb 2011
Location: Yucca Valley, CA - Kelowna, BC

Posts: 677
iTrader: (0)

Garage List
2008 BMW M3  [0.00]
2007 Ford E350 4x4  [2.75]
Quote:
Originally Posted by pbonsalb View Post
The bottom side probably looks great. If you change one of these filters and study the intake box, you will see how debris collects on the top, but falls off on the sides and does not collect on the bottom. And as air filters go, the used stock one in the picture is not bad or clogged up enough to cost 15 hp.
The top is the clean part! The bottom of the filter it was grimy. I'd say 15-20% of the filter was blocked.

Obviously, it sounds better and is a little more responsive. I'm not saying it's because of a K&N filter but a filter that is not clogged.
4corners is offline   United_States
0
Reply With Quote