I tried and compared both Mann and K&N air filters and didn't see any
improvement, it could have some but I didn't notice. I tried on both old
engines (80K+ miles engine) and rebuilt engines.
The only thing I don't like K&N is the cleaning and the time it takes to
dry before reinstalling it. For ex. on a long trip, doing some off-roading,
unpaved and dusty roads etc etc. if I have a Mann filter I'd just pop it in
and that's it. On the other hand with the K&N filter I will need the
cleaner, the oil, water from a hose and a couple hours drying time. In
short for convenience I like Mann filter better.

dan

On Mon, Nov 16, 2020 at 6:46 AM Thomas Casal <thomas.casal@gmail.com> wrote:

> Hello volks,
> I searched my emails to see if this has already been discussed but hasn't
> since the time i've been on the list so. What are the experts thoughts on
> running a k&n air filter on these beasts? I've been running one for a
> couple years. definitely feels like I gained a tiny bit of horse power but
> are those couple extra horsies worth it? also noticed had to clean it was
> before 50k miles must be the dirt roads I drive on during camping season.
> thanks in advance.
>