Quote:
Originally Posted by powers1
Think of a K&N as a longlife air-filter as it is washable and therefore reusable.
We been fitting them for years and as far as gains go you can expect 1% gain when new, which is barely noticeable!
The problem is that people think they last 4ever and forget to clean them!Because K&N filters consist of mesh and oiled cotton it traps all the dust perfectly but when this becomes clogged ,very little air reaches the engine and as a result the engine sucks the air-filter and and breaks it!I have seen this on many occasions!However,depending on your climate conditions ,if you clean it every 5000 miles max,you should be ok!But then again I wouldnt fancy removing the air-filter on my 3.0D that often.I have had to cut off a bit of unnoticeable plastic on the engine bay on make two special tools to make my next air-filter change that much more easier.
Have a look at this custom made direct induction kit on Eibachs test vehicle.
http://www.xoutpost.com/x5-e53-forum...ghlight=eibach |
i also shaved some plastic part... is it on the left side of the air filter cover? (when standing in front of the engine) and i somehow dented (didn't tear it, just a little dent) my new air filter when putting back the cover.(there is so little space to work the cover on the back side). is it normal that you'll scratch the new air filter just a bit when putting the cover back on?