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Guys

Has anyone tried using a drop-in K&N Air Filter? Any performance increase that justifies the price?

I'm thinking of dropping in one of those for my 2004 1.7 Civic.

Appreciate your feedback.

 
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I have one in my 2002 civic. I spent like $20 on the internet for it......but I had just bought the car along with the filter so I never really knew how the car picked up without it......but I did notice a small difference in the pickup, unless it was my imagination. I'm just glad to have it.....all the advantages of having it makes me happy knowing I have something to give more air flow for it.

In my previous car, I had an intake and hated it as I would constanly be cleaning and oiling the cone filter.....forget that.

 
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But aren't the K&N drop in filter need to be washed and oil periodically as well?

Is it true that there is noticable dust in the throttle body as a result of using K&N filter coz it allows more air + particles into the engine?

 
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I've had the K&N panels on 3 cars (my old Grand Am, my wife's Vibe and my Civic). I've never noticed any dirt past the filter.
They say to clean them every 50000 miles or sooner if you drive in dusty conditions, but I think everywhere counts as dusty conditions, so just check it once in a while. I don't put a lot of mileage on my car, so I just clean mine every couple of years.

BTW - no real performance gain any any of the cars, except for the shitty Grand am, but better gas milage

 
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i have a aem filter and i live in a dusty condition and i only clean it every 6-8 months and it is just fine, dust in the throttle body should be none to minimal most of the dust get stuck on the piping or airbox

 
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The K&N drop in filter is good because it doesn't need replacing, you can just wash it with the K&N cleaner. However if you want a little more performance, or just a nicer sounding engine, get an short ram or cold air intake.

 
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the drop in filters dont get as dirty as the cone style ones because its not in the wide open area. drop in filters would probably need to be cleaned every 100k miles.

the cone style ones would need to see cleaning 30k miles or so.



the drop in filter doesnt dramatically increase power, you can maybe expect a 1hp gain as more flow goes thru the K&N instead of the factory one but many have argued the OEM filter works best to prevent particles comming into your engine.

OEM = less flow thru filter, blocks more unwanted particles
K&N = better air flow, more particles are more likely to sneak thru


i would go for the K&N, if the drop in filter doesnt get so dirty, i doubt you could harm the engine enough to know by using a K&N drop in. take a good look at the OEM air box, its stretches all the way to the left side of the vehicle to the TB.

 
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If you use K&N, don't clean it for at least 50k miles. They work better when dirty to filter the air.

 
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^that is true and applys to the K&N cone filters as well. pretty much any filter that K&N makes.

but i would expect the cone style filters to see more dirt transporting thru than the drop in as its guarded with a huge resonator and long lengths of piping.

 
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the long pipes really don't matter actually. I've looked and there is no dust at all in there. It all goes to the filter.

 
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I bought one... no regrets so far... I did not notice any power increase or sound difference. But I think I did get better gas milage...

 
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There is no performance difference, and listen to gearbox - don't reoil it just because you think it looks dirty. A major source of problems with K&N filters are when people who don't quite know how to clean them use too much oil on the filter and it gets sucked into the TB, creating quite a mess.