Air filter Mann or K&N

I have and like the K&N filter that drops in the factory housing, i like that you can just clean it and put it back in. You won’t notice any difference power or fuel milage wise.

I had a 2014 Ford fusion with a 2.5l engine and put one in and I could definitely notice a difference. Plus it is a lifetime filter so you'd never have to replace it again. Only clean and refill with oil.

You could look at a K&N drop in filter. They flow better and can give a little performance boost.

K&N seems to always have the best option.

For my 2018 tuned GT, I just got a K&N high flow drop in air filter to swap into it. You can get it off of American muscle for like $60. I'd say do that and save more money for tune/exhaust.

K&N in my 3.7

I recently replaced my filter with a K&N. I was hoping for a little more felt power and better fuel economy. I've had my 2010 Prius IV for 4 years and have put over 60k miles on it so I'm pretty "in tune" with it. I haven't noticed any difference in either area.

The K&N high flow filters actually make a large difference... IF and ONLY IF you upgrade the intake and delete the OEM airbox with it. If you plan to keep the OEM intake and airbox, it will make not much of a difference.

I see no benefit in spending more than $12-$16 on OEM supplier air filter (Mann, Heignst or what have you). Marketing can try their best but I just ain't buying it.

Second, these things suck! Buy a Non-Oiled cold air intake instead. If this is a Planted ad, K&N even has one, I have it on my TRDOR. Third, I am a dealer parts guy as my career... And, yes, I Know better. And yet I STILL over oiled my K&N filter and killed an expensive Mass Air Flow sensor on my truck. So I will Never use an oiled filter again. Old technology, imho.