Apart from the fact that K&N filters let a lot more dust in than paper filters, It is pretty well accepted that they foul MAFs on Rover V8s for the reason I gave.
K&N claim it doesn't happen if you oil it by the book Blah blah but sooner or later it will.
There was a scientific test done in the USA on all types of filters, which was referred to recently in an AULRO thread. Have a look.
This is a local test which backs up the US results
http://www.aulro.com/afvb/technical-cha ... nally.html
here is the US test
http://home.stny.rr.com/jbplock/ISO5011/SPICER.htm
Regards Philip A
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3.9 v8 idle problem
Moderator: Micka
haha i dont oil mine anyway and when i do it's a thin mist of the sticky shit that is almost like contact adhesive, (the k&n stuff) i wouldnt call it an oil, so i cant see it getting through (imo) i work on alot of cars with afm's and k&n that have had for a long time and have never seen bad sideaffects
1994 Range Rover Vogue SE 3.9i 4sp 'Softdash'
31" Wrangler MT/R "Kevlar", ARB F&R Bars, ARB rear locker, 2" coil lift and doof doof stereo
31" Wrangler MT/R "Kevlar", ARB F&R Bars, ARB rear locker, 2" coil lift and doof doof stereo
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