Best drop in air filter
 

Hey, I am planning on changing my drop in air filter soon and wouldn't mind getting a few more HP. I was curious what the best one is? The options I know about are K&N, Green filters, stock filter, and I read something about people using STI air filters. Any help would be appreciated. Thanks

Best in my opinion is the OEM paper filter. It filters more dirt and no filter alone has ever proven to "add" horsepower. Even if it did, it would be such a small gain it would be pointless. Some people like the STI filter, but I think that's because it says STI on it. :rolleyes:

Maybe if you were making more power than stock, I would look into it. Maybe.

K&N filters are pretty good BUT you have to keep them clean & oiled, at least every 20k you gotta clean it with the filter cleaning kit.

Perrin makes a pretty good foam air filter http://www.perrinperformance.com/pro...gory=3&model=2

I've got an OEM filter in mine, I've been satisfied with it so far, although I'm tempted to get an STi filter from work and see how it does :D

Just don't get a Fram, Fram filters are :barf:

i actually have a k&n filter and found that my car seems to like the disposeable filters better. im selling the k&n off wih my black 97 and keep with the "mechancs reccomendation" on my current

Green filters are nice i think they flow better and filter better than k & n

K&N does not filter well... I have a Green air filter in the red car and a STi filter in the silver car. IF there is any gain from putting the Green filter in exchange for the OEM paper one, it is negligible.

In my opinion, using any oiled filter like a K&N will not be beneficial, the oil used tends to foul MAF sensors before their time. Any filter that 'flows' better by most likely 'filters' less particulate matter... e.g. you'll see the biggest increase in horsepower by not installing a filter at all. Any dry filter like Green or AEM or STI won't hurt, but the difference between them and the OEM is noticeable only in your wallet

The above should be accepted as being fact, rather than an opinion.

Agreed. I have replaced many MAF because of non oem filters that either come apart or deposit the oil on the sensor element. I don't think you need to worry about the filter... yeah the K&N will flow more air, per cubic inch, but the stock filter is big enough to flow more than enough air for the engine...

I bought the washable fram filter, and it works great, and you don't have to oil it!

I just got one of those also, I hope i can drive the car soon to test it out.