K&N air filters add 5-10%? Also: xenon?

[JShadzi at aol.com]

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[ Picked text/plain from multipart/alternative ]
Don't take any of the Blau HP figures for real, they are very optimistic and
over inflated, like most aftermarket tuners unfortunately.

Javad

In a message dated 1/19/2003 1:40:12 PM Pacific Standard Time,
bwpearre at alumni.princeton.edu writes:

> In my quest for new headlights I ran across this:
>
> http://www.audiquattroparts.com/tuneup/air_filters.htm
>
> They claim that the K&N air filter will add 5-10% more HP to a car.
> For my 1990 200TQ, they sell the normal filter for $10 and the
> washable reusable magical one for $45.  Has anyone used these?  Do
> they work as advertised?  How often do I need to wash them?  Washing
> machine, or dryclean only?  :)
>