Does the K&N drop in filter do anything?

[Hockenheim]

Other then make sound? Are there actually gains from it?

[rpmfoundation]

Other then make sound? Are there actually gains from it?

i have it.. and honestly it just feels a bit different.. and as much as i would love to say that i am getting extra 15hp from "STOP! its a K&N filter" sticker on my airbox.. i cant ..

[Alkemix]

Probably no gains. It might add some fuel efficiency, but wouldn't expect anything to call your mom about.

Wondering how much difference it makes in sound though. anyone can vouch for a noticeable change in sound?

[D-techniK]

Fuel economy should improve and the piece of mind that after cleaning it 3-4 times it pays for itself.

[outlaw77]

nothing gained.

[darin1274]

doubt your going to actually hear anything. In order to have any type of sound, you have to run an open air element (ie no air box)

[eMacPaul]

If I listen real closely I can hear the turbo a bit now...

[Quattro]

sound

[whitevdub]

i was thinking about getting the k and n drop in when i first got my car, but a few weeks ago i ordered a bmc air filter. i havent put it in yet, but i heard you get better gains from it(for an air filter) and you can actually hear the intake

[Echo3One]

no sound, minimal gain that's not even worth talking about, only think going for it, is that it is reusable.

[ringmaster2.0]

i can hear a difference with my itg filter, it honestly feels like i have a bit better throttle response. However everyone knows with mod, a lot of what you think can be psychosomatic

[rnp614]

how does one change the air filter?

[whitevdub]

^ yea i agree...any diy?

[Bart-Man]

Undue the screws in the front and pullthe middle of the snokle. It will come off.

Comes off in three pieces.

Its quite easy.

Then snap it back in place.

[rnp614]

pics pointing to what you're talking about if possible? :)

[rayiish]

Wait so you dont need to take off the bumper or anything? Its really as simple as 3 screws?

[rnp614]

by the snorkel you mean what goes to the front of the car? I've taken that out in order to install the GSG intake pike...I'm just wondering where the air filter is exactly.

[toothysaw2]

i've not seen any real gains from having k&n. i think i've convinced myself there is slightly better throttle response, but doubt it's really there. there is a little more sound. the drop in is significantly thinner than the one it replaces so there is a ton of extra space in the air box for the air to roar in. haha. i haven't seen any improvement in gas mileage, and i track it pretty closely.

[Turn10]

I have it, increase in fuel economy as well as pocket depth. Never have to replace, just have to wash it. I do however think that their is a little gain in acceleration. Not 15hp though, no way.

[eMacPaul]

You don't even need to unscrew the front of the snorkel. The middle piece compresses, so you can take it and the next piece out. You still need a screwdriver to open up the air box, though.

[stephengraham]

On my 3.2L V6 there is a noticeable change in sound around 4k rpm and above. Also normal take off from sitting its a bit throatier. For me it was worth it.

I had a dolocek cai on my celica years ago, it was just a pipe with a k&n cone on the end, typical. That made the best suction hiss noise, I loved it. It was open air though. This one is still going to be inside the box so the high pitched hiss isn't there. There is no difference at idle or at constant speed.

On a side note, I don't think I've come across anyone that wasn't surprised at how much crap they found in the pre-filter or in the bottom of the air box when they opened it up. If you don't get the new filter, I would recommend cleaning it out anyway. That alone may make some difference in the sound.

Not sure what you are expecting to hear or what experience you've had with intakes in the past, but thats about it.

[rpmfoundation]

1. make sure your car is completely cool, otherwise pieces will have hard time fitting back together.

2. separated the intake - section between the grill and the airbox ( just pull apart )
2a. there's a little dirt/particle screen - put it aside you wont need it - BUT KEEP IT!
3. unscrew 2 screws from top of the airbox - dont try to take them out just unscrew.
4. pull up on the little metal clips attached to the airbox ( 2 of them ) otherwise you wont be able to open up the box to remove the gianormous OE air filter.
5. pull up and out the box cover

and reverse the above to put it back together

hope that helps.

[Hockenheim]

i can hear a difference with my itg filter, it honestly feels like i have a bit better throttle response. However everyone knows with mod, a lot of what you think can be psychosomatic

what's ITG?

[ringmaster2.0]

itgfilters.net

[darmz]

50 whp ?

[jahciple]

can you just buy an open air filter and stick on there, or do you need a different piping connection or something?

[RedS-line]

^ yes buy a k and n cone filter and throw out the quiet airbox and just clamp it on there with the supplied clamp. the sound is the same as a bov which is either love it or hate it (i love it). the cone should flow more air but heatsoak will be a bigger problem so build a heatshield or zip tie the stock one to prevent the heat from getting to the cone and youre set.

[Alkemix]

^^Is there a DIY writeup for this? I'm doing this TODAY if I can. Would be great to use the stock airflow box just like the EvoMs intake. Also, I heard someone else mention adding a velocity stack (which is supposedly what the what the EvoMs intake has built into it). Can someone elaborate on that, and is that something you can do yourself?

[rnp614]

1. make sure your car is completely cool, otherwise pieces will have hard time fitting back together.

2. separated the intake - section between the grill and the airbox ( just pull apart )
2a. there's a little dirt/particle screen - put it aside you wont need it - BUT KEEP IT!
3. unscrew 2 screws from top of the airbox - dont try to take them out just unscrew.
4. pull up on the little metal clips attached to the airbox ( 2 of them ) otherwise you wont be able to open up the box to remove the gianormous OE air filter.
5. pull up and out the box cover

and reverse the above to put it back together

hope that helps.

Where are these clips? I dont see these and I cant get my stock box to open much more than a half cm to 1 cm as it stands. What do I do to get that OEM filter out?! Is it a problem that I have the GSG intake pipe?

EDIT: You talking about the clips that were on the stock intake pipe? Do you need to mess with the heat shield or does that lift up and out as well?

[Bryan]

how long you guys wash your KNfilter ?? a month ? half year ?

[agorich]

i had the short ram aem filter on my civic w/ k & n filter. i cleaned it every year. stuff was pretty dirty though. i had to run it through the cleaning process 3 times to make it almost lik eit was a new filter. but, it was tight cause it was real clean and I could hear the intake well in the car agin. that was w/ my civic though. and ive been drinking so sorry about the bad spelling.

[blkb707]

It worsen your gas mileage....because you will tend to step on the gas harder a lot more often just to see/hear if there is any gain at all. At the end of the day, having that K&N filter did cost you more than just th stock one which helped you drive smoothly.
I don't quite get it when some of you guys say it saves you money to have K&N since been washable. Aren't our cars all come with the free audi service/maintenance up to 50K? Why would you need to already change the filter if so?

[whitevdub]

just popped in my bmc air filter....how do you know when the filter is fully in? because the bmc air filter is alot smaller than the oem one. i saw that the lips of the air filter were flush in the area and then i just closed it up..is there any specific way to put an air filter in?

[4RingRook]

1. make sure your car is completely cool, otherwise pieces will have hard time fitting back together.

2. separated the intake - section between the grill and the airbox ( just pull apart )
2a. there's a little dirt/particle screen - put it aside you wont need it - BUT KEEP IT!
3. unscrew 2 screws from top of the airbox - dont try to take them out just unscrew.
4. pull up on the little metal clips attached to the airbox ( 2 of them ) otherwise you wont be able to open up the box to remove the gianormous OE air filter.
5. pull up and out the box cover

and reverse the above to put it back together

hope that helps.

Okay, I tried putting in my filter this morning, but I noticed 2 things.

First, when I separated the snorkel piece from the top of the air box, there was no dirt screen as listed in 2a. - did the dealer forget to put that back in for the 25k service? (which I just had about 800 miles ago btw)

Second, I unscrewed the screws on the top of the air box, but I can only open it about a half an inch? I dont understand how to pull the top out as there are cables than run over the intake box that prevent that from happening.

What am I missing? Can someone please help?

[Bmeister]

pics pointing to what you're talking about if possible? :)

I just did a write up w/pics for someone for this and will post it here when I get back to my home office. It is quite simple.

[4RingRook]

Okay, I tried putting in my filter this morning, but I noticed 2 things.

First, when I separated the snorkel piece from the top of the air box, there was no dirt screen as listed in 2a. - did the dealer forget to put that back in for the 25k service? (which I just had about 800 miles ago btw)

Second, I unscrewed the screws on the top of the air box, but I can only open it about a half an inch? I dont understand how to pull the top out as there are cables than run over the intake box that prevent that from happening.

What am I missing? Can someone please help?

Answered my own question. Google is your friend. Here is a DIY for a K&N from a4mods:

http://a4mods.com/index.php?page=web.../pages/kn.html

[4RingRook]

That installed in 20 mins. haha, I guess I didnt pull hard enough on the clips on the air box the first time.

[Frey7190]

Why do the KN Filters make sound?? My Ford Explorer has a CAI and a cone KN filter, the weird part is that when I press the gas the intake makes a whirling sound, that makes pasengers who dont know the mods on it think it has a turbo! lol

[ifrenchman]

Hi guys,

I am tuning my B7 2.0TFSI, and when I was on dyno first day I have run it with stock filter, and than with K&N panel filter...

Outside temperature was ~16°c

With K&N I had ~0,9hp more power and little deper/better sound. Nothing else. And I think that my fule consumption is higher (with stock 600km full tank, with K&N 550km full tank). I drive same like earlier.

[ifrenchman]

Hi guys,


With K&N I had ~0,9hp more power and little deper/better sound. Nothing else. And I think that my fule consumption is higher (with stock 600km full tank, with K&N 550km full tank). I drive same like earlier.

BTW my friend on Volvo S40 T4 (1.9 turbo) first run = 200hp, second run with K&N = 210hp. I saw it with my own eyes.