The K&N packaging explains, quite in simple english, that the unit
passes 50% more dirt than the average paper/fiber filter. This has been
well covered in alt.autos.dodge.trucks over the last few years.
The story goes something like this: Paper filters consistantly clean
98% of the average crap out of the average "outdoor" air, K&N's pass
97%. This does equate to a 50% increase in dirt flow.
The bigger issue is the fact that K&N filters don't filter well until
they're actually dirty. The more dirt, the better it filters. Freshly
cleaned its no better than an oily cotton sock.
"Ruined"... Nope, I doubt anyone's actually had their engine "ingest" a
K&N filter or some equivalent action that you could actually call
"ruining". Premature failure due to increased wear due to unusually
high foreign matter in the intake is more like it.
K&N's do make sense in many situations. The biggest advantage of the
K&N is it takes a lot more foreign matter to "clog". If you're
operating tractors/trucks/dirtbikes/jeeps/4-wheelers/etc in conditions
where paper filters start restricting airflow nearly instantly, the K&N
filter is your best answer.
Actually, your best answer is a large, high-flowing pre-filter to catch
the bulk of the crud before it gets to the finer, standard filter.
That's pretty much "filtration 101". It can be difficult to do in the
confines of an engine bay, however.
Brian Nystrom wrote:
Let's see, so far we've discovered that he believes in the Bilstein
And perhaps uses a water injection (Adds 80 HP INSTANTLY!) add-on?
Water injection systems are predominantly useful in forced induction
(turbocharged or supercharged), internal combustion engines. Only in
extreme cases such as very high compression ratios, very low octane
fuel or too much ignition advance can it benefit a normally aspirated
<<<Note that for water injection to provide useful power gains, the
engine management and fuel systems must be able to monitor the knock
and adjust both stoichiometry and ignition to obtain significant
benefits. Aviation engines are designed to accommodate water injection,
most automobile engines are not. Returns on investment are usually
harder to achieve on engines that do not normal extend their
performance envelope into those regions. >>>
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.