While i respect your opinion, i will disagree with you. If you stated that you have tests from the same vehicle, same oil change interval, same driving conditions, with a paper filter vs a oil filter than i may change my opinion on the subject.
I am also a scientist that deals with specialized equipment (HPLC, NMR, MS, etc), so I understand what goes on with the testing and how to interpret the results. While my evidence is not directly related, i have seen numerous blackstone results for mustangs running K&N type filters with great results. I have heard people on the 'net' say that they are bad in jeeps and let loads of dirt in, but i'll chock that up to user error. I had a drop in K&N in my last jeep that the PO installed. My intake was always super clean without a hint of dust. Simple reasoning would lead one to believe that if the intake is clean, the engine is also clean. I will be running an oil based filter in my jeep as soon as i get around to installing the cowl intake system. I will say that i will probably throw in a paper filter on the cowl when i go offroading for extra protection. I also base my opinion on what i have seen from the desert racing crowd. Oil type K&Ns with a prefilter are the norm from dirt bikes to dune buggies.
Sorta whatt I was saying. K&N is what the majority of the wheelers and rodders use around here. That and Airaid, which is not quite as popular. and some of these guys are doing months of research and building 20k engines. Dont think they would throw their money away on crap.
Hey Y'all! Watch this! I saw it in a movie once!
If you guys have any shops in your area that do hot rods, they'll be able to give you contact info for someone who can do hood louvres... they're pretty much a requirement for any vehicle to be considered a "real" hot rod, and they are probably cheaper to have done than you'd expect... it can be hard tracking down someone who can do em though...
'71 DJ-5 (that isn't a typo)
'10 JKU Sport RHD
Do what you like. If you make a box, put a light in one end and a K&N filter in the other, illuminate it in a dark garage, you'll make yourself a mini planetarium and you'll be able to see the solar system on the walls. Do the same thing with a Mopar paper element and you'll just see a glowing box and have a weird table lamp.
My opinion is based on an experiment that I did about 3-4yrs ago.
I had a K&N in my YJ, and the oil was looking bad at the 3k change interval. So I cleaned and re-oiled the K&N, and ran it for the next 3k, changed the oil and kept a small sample in a clear container.
Then I put a paper filter in and repeated, the oil was much cleaner with the paper filter.
That's how I came to my opinion...........
(not to mention the daylight that can be seen through the K&N)
I'm looking into louvers for my hood, anybody install them?
Agree with the K&N! CRAP! As for the louvers, I'm running the long style Gen Rights. They did lower the under the hood temp some, But my air intake pipe still gets plenty warm. I'm using a cowl style induction (pulling from where the a/c's air also does) with a custom molded scoop with the opening facing forward so plenty of cold air, but by the time it travels through the tunnel of heat............... I'm sure it's much cooler than if I were still using the factory oven box! But the louvers do make a small difference under there.