• We’re currently investigating an issue related to the forum theme and styling that is impacting page layout and visual formatting. The problem has been identified, and we are actively working on a resolution. There is no impact to user data or functionality, this is strictly a front-end display issue. We’ll post an update once the fix has been deployed. Thanks for your patience while we get this sorted.

My new air filter...

alkemyst

alkemyst

No Lifer
K&N RR-3001. Replaces my Injen (basically a K&N RU-5176 standard cone filter).

The new one is a reverse conical.

RR-3001.jpg


Now I doubt it added any major power. However, throttle response seems better (although my old filter was overdue for a cleaning), but the main thing is the 'engine' sound is much nicer.

A bit more deep and a 'better' sound.

It was cheap IMHO on Amazon for about $50 shipped.

This fit's my car perfectly coming almost to the inner fender liner, which it should being it has the exact same dimensions as my original Injen filter.
 
Last edited:
JulesMaximus said:
Pics of car?
Click to expand...

It's my 240SX...http://driftkat.com/98SEmine.php

my real question is how do you not show you edited a post here....

your original post was "I doubt it added any power whatsoever" which I was going to reply was my point. Sound is much better though than the old filter and I doubt I lost power over the Injen filter which was dynoed for a slight power gain. The stock air box could have been modified for about the same power gain, but in stock form is terrible.
 
I need to put a conical filter on my GTI. I bought a K&N drop-in and it gave it a little extra noise, but nothing like the conical K&N that I had on my Jeep.
 
alkemyst said:
It's my 240SX...http://driftkat.com/98SEmine.php

my real question is how do you not show you edited a post here....

your original post was "I doubt it added any power whatsoever" which I was going to reply was my point. Sound is much better though than the old filter and I doubt I lost power over the Injen filter which was dynoed for a slight power gain. The stock air box could have been modified for about the same power gain, but in stock form is terrible.
Click to expand...
There's a grace period after posting during which edits are not declared.
 
I'd recommend the reverse conical then. Apexi is the best but expensive. It's a 1 HP gain which is a lot for just a filter. The standard K&N cone filter was 1 HP below it.

This K&N is nicer looking and better sounding though than the original standard cone. That's good enough for me.

A
 
alkemyst said:
It's my 240SX...http://driftkat.com/98SEmine.php

my real question is how do you not show you edited a post here....

your original post was "I doubt it added any power whatsoever" which I was going to reply was my point. Sound is much better though than the old filter and I doubt I lost power over the Injen filter which was dynoed for a slight power gain. The stock air box could have been modified for about the same power gain, but in stock form is terrible.
Click to expand...

Because my original post didn't really add anything to this thread so I thought I'd ask the next question that came to mind instead.

I actually like the 240SX. I'm not sure that modding it really adds a whole lot to the car...I've never actually driven one but they look decent and it is a RWD car so that's cool with me.

FTR-I don't think it will increase power at all. 😛

Edit-What's with the Ford Motorsport Cobra knockoffs?
 
JulesMaximus said:
Because my original post didn't really add anything to this thread so I thought I'd ask the next question that came to mind instead.

I actually like the 240SX. I'm not sure that modding it really adds a whole lot to the car...I've never actually driven one but they look decent and it is a RWD car so that's cool with me.

FTR-I don't think it will increase power at all. 😛

Edit-What's with the Ford Motorsport Cobra knockoffs?
Click to expand...

they are knockoffs? They are real FMS rims, bought new. It's in the link I posted to you.

The 240SX is a monster modified. I am still debated to go C5 Corvette, E36 M3 or change my car next year.

I needed a replacement filter. I wasn't looking to add power in it this time...just dual conical is better due to design.
 
angry hampster said:
I need to put a conical filter on my GTI. I bought a K&N drop-in and it gave it a little extra noise, but nothing like the conical K&N that I had on my Jeep.
Click to expand...

MKV GTI? Let me know if you need any help/want recommendations. Ive got a 2.0T that i just put an Injen intake+cone filter on.
 
alkemyst said:
your link sux.

I will ignore this post.
Click to expand...

Alternate link.

Also, archive.org saved version of the original link.

Some salient quotes:

The AC and Baldwin filters each had near linear responses until reaching maximum restriction. Restriction for these filters increased at a constant rate versus the 9.8 gms/min dust feed rate. The other filters, most notably the oiled reusable types, had an exponential loading response before reaching maximum restriction. These filters had a lower initial restriction, but they became exponentially more restrictive under a constant flow of dirt.
Click to expand...

The AC Delco filter test ran for 60 minutes before exceeding the restriction limit while the AMSOIL and K&N tests each ran for 20 and 24 minutes respectively before reaching max restriction. In 60 minutes the AC Filter accumulated 574gms of dirt and passed only 0.4gms. After only 24 minutes the K&N had accumulated 221gms of dirt but passed 7.0gms. Compared to the AC, the K&N “plugged up” nearly 3 times faster, passed 18 times more dirt and captured 37% less dirt.
Click to expand...

In other words, the K&N filters let significantly more dirt into your engine and clog up significantly faster.

Also, regarding hp gains, chassis dynos have margins of error in the 10 hp range. A "1 hp" gain is mythological. It's testing variance, not a legitimate gain.

zerocool84 said:
Another K&N thread. Here we go.
Click to expand...

I'm just waiting to see if K&N is going to astroturf again and have an employee register to insult us.

ZV
 
tested the drop in deal.

The Injen intake which uses a K&N filter model made more power. That same filter model tested high on filtration and power in other tests which have been more accepted.

I never said 1HP was the answer. However; 1HP is still more if proven over 'testing' which most of these articles have done.

Whether 1HP will be noticeable in anyway is another story.
 
Last edited:
alkemyst said:
tested the drop in deal.

The Injen intake which uses a K&N filter model made more power. That same filter model tested high on filtration and power in other tests which have been more accepted.

I never said 1HP was the answer. However; 1HP is still more if proven over 'testing' which most of these articles have done.

Whether 1HP will be noticeable in anyway is another story.
Click to expand...

The filtration of K&N oiled filters is worse by design. They flow slightly more air by being less restrictive, which they do by having bigger pores, which means more and bigger particles get through. The testing done proves that conclusively. Drop in or cone makes no difference, it's the same material.
 
Last edited:
crazySOB297 said:
Wix or other high end filter > K&N > cheap drop in > stock. You'd be surprised how restrictive the OEM filters can be.
Click to expand...
I made max power on my OEM filter. Not all of them are overly restrictive.
Zenmervolt said:
Alternate link.

Also, archive.org saved version of the original link.

Some salient quotes:





In other words, the K&N filters let significantly more dirt into your engine and clog up significantly faster.

Also, regarding hp gains, chassis dynos have margins of error in the 10 hp range. A "1 hp" gain is mythological. It's testing variance, not a legitimate gain.



I'm just waiting to see if K&N is going to astroturf again and have an employee register to insult us.

ZV
Click to expand...

That was a good one!
 
Interesting forum post http://www.st-owners.com/forums/showthread.php?t=76421&page=3

There is no question that the K&N flows more air than a paper filter. It also allows more dirt through as well. I have read several reports on Off Road vehicles that have had oil analysis done with and without K&N filter and in every case the oil analysis showed that the filter allowed contaminants into the engine. A mining company was spending a lot of money replacing paper filters on their large diesel trucks so they decided to try K&N filters so that they could clean them instead of replacing them. After a short time the oil analysis showed that a lot of contaminants were getting into the engine. They had to remove them and go back to paper. Paper filters very well but is more restrictive. These tests were performed without the foam outer filter so results are probably better with it in place. Also road bikes are not subjected to the amount of dirt as off road machines. Another problem with K&N filter is that being they are oiled they allow oil to migrate down the intake tract and the oil can coat the IAT sensors and make the intake air temp sensors read off which will cause fuel injected engine to run rich. This happened when I was running a K&N filter on my Dodge Cummins diesel engine. When I removed the filter and cleaned the sensor I got about 2 MPG better fuel economy.
Click to expand...
 
alkemyst said:
However; 1HP is still more if proven over 'testing' which most of these articles have done.
Click to expand...

Apparently you're a bit shaky on the concept of "margin of error". If a dyno has a 10 hp margin of error, then it's completely and entirely impossible to ever "prove" a 1 hp difference. It cannot be done.

ZV
 
Even if there is a 1hp increase, it's not worth wearing the engine out faster. The 240sx is a classic, not a throwaway. Leave K&N to the ricers in their DSMs... Oh wait there are no more DSMs on the road anymore because they got run into the ground with K&N filters, hot air intakes, wings, 30lb wheels, and stickers
 
Last edited:
You must log in or register to reply here.

TRENDING THREADS

Back
Top