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Discussion Starter · #1 ·
Hey guys,

I just installed an OEM style K&N air filter into my car a few days ago. After resetting my ECU, the car has a noticeable increase in throttle response. I decided to go with this since I like how the air induction system on the Elantras are. I noticed that the air is pulled from the wheel well on the front driver's side. That is where most cold air intakes pull their air from also. And since I'm using the stock box, this should definitely keep the air cooler than going with an open box, warm air intake. What do you guys think? Have any of you had experience with K&N filters? So far so good for me...I'm still waiting to see if it increased my mileage at all.


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K&N = <img src="http://www.lamer.net/gay.gif">
didn't do much for me......
i'd just get a true cai or build a ghetto one or even just a heatshield filter($30-40) aimed towards the back of the battery would give you more ponies than a K&N filter"charger"

i think this was already discussed in another topic....
http://www.hyundaiperformance.com/forums/snitz/topic.asp?a=&t=7127
there we go


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Edited by - mach5 on 02/15/2002 06:24:23 AM

Edited by - mach5 on 02/15/2002 06:26:14 AM
 

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<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>After resetting my ECU, the car has a noticeable increase in throttle response.<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>
....
How did you reset the ECU? And does that realy help in anyway to config to your mods.


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Edited by - law2k1 on 02/15/2002 06:36:59 AM
 

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KN filterchargers are gay. I'll have to agree with Mach5 on that one. I had one in my 2k Elantra. Didn't do anything. No increase in power, no throatier or increased throttle response. I think the KN filtercharger is more of a physcological thing. Just because it says that you will feel an increase in hp, you feel that increase because you want to. However, some people swear that they feel a difference. I didn't. I think my gas mileage increased a gallon or two. The reason I don't have it anymore because my engine light kept turning on and off. Thinking that this problem was related to the filter, as it DOES trigger some engine lights due to the increased air flow, I removed it. Low and behold...Engine light went out!

Just my two cents on that filter.


<hr width=60% noshade size=1 align=left>2000 Hyundai Elantra GLS
-PIAA 1100x superwhite foglights
-PIAA Plasma headlights
-Sharkracing clear corners w/ amber bulbs
-Deflector
-10" pioneer subwoofer w/ 600 watt Kenwood amp
-Blue dome light
 

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If a K&N Filtercharger triggers the check engine light to go on because of increased airflow, wouldn't a true CAI cause the check engine light to come on as well?


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i have weapon r ram air kit with dragon intake on my 2k elantra and the light has yet to come on. it's basicly a cai

BlackElantraGT2002- how does reseting ECU affect anything
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Edited by - law2k1 on 02/15/2002 11:40:49 AM
 

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ive got the k&n on my car, ive definately notices it will let the car breathe easier at high rpms....... it usted to get a really high pitch when it was high, but now is lower and LOUDER at the same rpm speed, i guess you can say its a waste of money but it I would say its better than the stock, which is more like preventive maintainance if you ask me...

like getting synthetic oil, do you feel you car performing better??? i sure dont, but it IS better for the car, so you should use it


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The K&N lets more air into the engine which means it doesn't filter all the crap as good as the stock one does. Therefore your engine is sucking in crap it shouldn't be. Call me a liar? I even talked to a technician about that out of curiousity and he told me that and agreed.


<hr width=60% noshade size=1 align=left>2000 Hyundai Elantra GLS
-PIAA 1100x superwhite foglights
-PIAA Plasma headlights
-Sharkracing clear corners w/ amber bulbs
-Deflector
-10" pioneer subwoofer w/ 600 watt Kenwood amp
-Blue dome light
 

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jrh your right, my hyundai dealership ripped mine out and started going ape telling me to just get a cai or a heatshield filter... anything but a K&N<img src=/images/forums/snitz/laugh.gif width=15 height=31 border=0><img src=/images/forums/snitz/laugh.gif width=15 height=31 border=0><img src=/images/forums/snitz/laugh.gif width=15 height=31 border=0>
thats the only time my dealership made me do this<img src=/images/forums/snitz/laugh.gif width=15 height=31 border=0> instead of this<img src=/images/forums/snitz/cry.gif width=16 height=16 border=0>


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nah they asked me if i really believed that it added horseys and i was like i didn't feel much of diffrence other than high end power was a tad bit better and they told me its because a little more air is let in but for the money i spend on that i could of just got a heat shield filter or made a ghetto cai

yea some of those guys are cool some are cocks!<img src=/images/forums/snitz/thumbup.gif width=25 height=18 border=0>


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A K&N filter works differently then a regular filter. It's the oil in it the filters stuff out.

In the stock airbox it won't give you much gain. You engine still has to suck pretty hard to pull air through a filter that shape. A CAI is they way to go. Cone filters in general are better.

If you really want to flow you can do like some people I know do. CAI with no filter. They just run some SeaFoam through the throttle body every 3000 miles or so to clean it out.

It's not for me I have to drive my car every day, and a drive places where there is a alot of crap in the air, but it works for them.


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<img src=/images/forums/snitz/laugh.gif width=15 height=31 border=0> Man... A K&N filter when installed and used correctly filtters BETTER than a stock paper filter AND has more flow. I have used K&N filters for years on about every car I have owned. Extra power... well depends on the car. On my old Grand Prix SE 3.8.. I noticed a little difference. On my Grand Prix GTP... no difference. I buy them because they are good filters and are reusable. There have been many tests on K&N filters.

Every drop in K&N filter meets or EXCEEDS mfg's specifications! Anyone says otherwise either didn't use/install it correctly or doesn't know what they are talking about. <img src=/images/forums/snitz/laugh.gif width=15 height=31 border=0>


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2002 Champagne Elantra GLS 5sp
2001 Black Grand Am GT sedan
 

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<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
Cone filters in general are better.
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

Cone filters are the same design as K&N but do not have the same reputation as K&N has.

<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>
If you really want to flow you can do like some people I know do. CAI with no filter. They just run some SeaFoam through the throttle body every 3000 miles or so to clean it out.
<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

I would never never never never never never never never never never never EVER do that to a car.. the dirt traves past the TB and into the engine!! Your friends cars blow smoke yet? Cause running it like that will tear up the rings, cylender walls... contaminate the oil... <img src=/images/forums/snitz/disapprove.gif width=15 height=15 border=0> that's complete abuse of the engine. I'd feel better driving my car balls to the wall, rev limter bounce every shift everytime I got in the car than running with NO filter!!

Perhaps run no filter on a drag car.... that's if I knew I was going to rebuild the engine every3rd race or so!!!
 

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Discussion Starter · #16 ·
When I had first installed the K&N "filtercharger" and drove around the block for a few times, I wasn't really able to tell much of a difference. The next day, after disconnecting my batteries (resetting the ECU), I was able to feel the difference. Supposedly their filters work as good as paper and foam filters if not better. Jrh, if your engine light was coming on because of a K&N air filter, imagine what a cold air intake would do to yours! Also, whenever you are trying to gain more power from your car, you are definitely going to use more gas. More air=more fuel=more power, right? I'm pretty sure the OEM K&N filter didn't majorly increase the ponies in my car, or most cars in general, but I do feel a difference. I only did this because at the current time there is no reliable hyundai aftermarket manufacturer, plus I like the fact that the air from our stock box is being pulled from the wheel well, and not through the engine bay. Yeah, I guess I could wait for KORE to finish their cold air intake, but honestly, it seems like none of their products are dynoed. Everytime I see the dude telling us about the product, he never says anything about what the actual increase is in hp/tq. He just mentions seat of the pants feelings. Of course anyone is gonna say that, especially if that's the product that you're selling, but at least back it up man. K&N has been in the business for a few decades now...if their products were really THAT crappy as you say, they wouldn't still be in business after all these years.


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So you are saying if I disconnected the battery to reset the ECU, I would have felt a difference? Because I did not do this.


<hr width=60% noshade size=1 align=left>2000 Hyundai Elantra GLS
-PIAA 1100x superwhite foglights
-PIAA Plasma headlights
-Sharkracing clear corners w/ amber bulbs
-Deflector
-10" pioneer subwoofer w/ 600 watt Kenwood amp
-Blue dome light
 

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Discussion Starter · #18 ·
I don't know if you would have noticed a difference or not, but I figured that by resetting the ECU, it would adjust to the slight increase in air. It wasn't a major increase in power, but I was able to notice the difference from the stock filter.


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Resetting of the ECU (disconnecting the battery) is done to force the engine to learn the new operating parameters (more air flow) right away. If you do not reset the ECU your engine will adjust to the new parameters over time (maybe a week).


<hr width=60% noshade size=1 align=left>1976 Maserati Merak SS
2001 Elantra GT
PIAA Xtreme White low beam
K&N Filtercharger
B&M short shift kit
 

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<BLOCKQUOTE id=quote>quote:<hr height=1 noshade id=quote>I like the fact that the air from our stock box is being pulled from the wheel well, and not through the engine bay<hr height=1 noshade id=quote></BLOCKQUOTE id=quote>

XD Elantra's do not pull air from the wheel well. There is a resonator in the wheel well but the intake opening is actually behind the headlight. Remove the plastic cover in front of your battery and you will see it. The plastic tubing runs from behind the headlight, under the battery tray to the resonator in the wheel well then up to the air box.


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