I ran Simple K&N air filters on my trucks years ago. Now, I have a 2010 F150 5.4L. Can anyone tell me, are these filters still a wise investment? DI you really notice any improved mileage or HP? It's been years since I had one on my old trucks. Just wondering.

 

i had one in but after reading a million posts and filter tests on why i shouldn't... i put oem paper filter back in. honestly... can't really tell... if anything maybe runs smoother now.

 

If you want dirtier oil, reduced engine longevity, no change to gas mileage or hp, and the joy of cleaning and re-oiling a filter periodically, then get one.

 

Just as I thought. Thanks for the info guys! I gear lots of talk on cold air intakes. Much difference there? I hear not, besides a gain of a few HP?

 

mine makes more sound/noise.

 

Increased intake noise, maybe a few hp (depending on how good the factory stuff is), looks cool, no change to mileage.

 

The extra silica in the oil is what sold me on k&n

 

No.

 

I doubt you gain even 2 hp with an intake. I bought mine for sound. Gives my 3.7 a deep, throaty tone under acceleration. No change in power or mileage.

 

Thanks guys! The extra sound would be cool though, but at a price.....they don't run overly cheap, just for that.