K&N Drop-In Filter (Quick Impressions)
 

Good morning.

Last night I received the K&N Drop-In Filter via UPS for my BRZ right from K&N’s web site for about $50 shipped and installed it without issue.

In this quick post, I am not going to get into the benefits of an aftermarket filter, but rather provide some quick initial impressions.

Pros

• RPM’s Rev more freely
• Power band ‘feels’ smoothed out
• Acceleration is achieved quicker
• A ‘slight’ increase in suction sound
• Quality Product
• Retains the BRZ Excitement and Giggle Factor
• Worth the $50 Spent

Cons

• None

nice! I will look into one too.

Mine didn't do any of these things.

you sure this is not placebo effect?

Mine came in on Monday, I just need to go down to the store and pick it up. Although, I may wait until the engine is 100% broken in so I can drive the car hard back to back with the stock vs. K&N

Interesting.

All we need now is some scientific evidence to prove these claims! To the lab!

Magic filter indeed! Didn't Perrin dyno the car with and without a filter and there was no difference? lol

I've owned enough cars to advise that what I posted is accurate. Nowhere did I mention any HP increase. I doubt there was any.

Next week I'll be installing and reviewing Accelerate Performance's Intake and Exhaust Systems. Therefore the stock system + K&N will be removed in less than a week's time.

Stay tuned.

Sounds like a sugar effect to me except the sound.

If it truly does sound better, I'll bite. Waiting for more impressions. If you could expand upon that I'd like to know.

Thx.

I got it, for $37 why not? I will not get a CAI so... this at about the same price as the stock filter, no brainier.

in most cases the stock air box with a good filter and some cold air feed is the best solution as opposed to an open pod type filter that a lot of tuners opt for.

The only think you will "feel" after installing a cotton gauze/oil filter like the K&N or TuRD is a lighter wallet.

If you want a giant metallic dildo under your hood, go the extra step and install a cold air intake.

Can you explain how you think the car accelerates quicker if there wasn't a power increase?

What's the K&N part# ? I was thinking about picking one up.

Back to back 1/4 mile times in similar conditions with and without the filter, duh.

Just placebo effect. I usually replace the filter with a ITG foam one at the first service interval just so I don't need to change it again at the next ones.

It could be a heavier wallet when you don't have to replace your paper filter every 15k miles. I would've waited 'til 15k and replaced it with the K&N, then keep it for the life of the car. It should pay for itself after 45k. Power gains, though? Doubtful.

Here's the page,

http://www.knfilters.com/search/prod...x?Prod=33-2300

Part # 33-2300

Hope you guys buying this filter like dust going into your engine, and reduced filtering capacity. Have a nice day.

Do yourselves a favor and use the Apexi filter over this because it's a dry element and costs the same or less.

I looked this up because I've been trying to find a reputable source of a dry filter...Somehow apex-i totally skipped my mind. I guess with even the best dry filters you have to deal with swapping it out every 15k miles?

http://apexi-usa.com/shop/index.php/...ake-panel.html

i probably believe it sounds better - like the big assstruks with their big aftermarket filters... or the small motorcycles with the big K&N filters - each of those add some sound during acceleration - so i guess just for that effect .. is it worth 50 ? maybe. i wonder how the MPG is affected.
In a way, i think i have enough loud engine noise coming out of the bay.. id like to add some coming out of the exhaust instead !

Not a fan of the k&n sound, decent quality filter though.

Installed it before an autox it breaths better at higher RPMs but probably added 0 power.

At one point I also drank the Kool-Aid and had filters in every car and truck I owned.

I can attest that if you have a poorly designed air box on an agricultural vehicle (like an HD truck) a better flowing filter may add a bit of power. 0.5% of 400 HP is still a number, albeit infinitely small.

But my experience is with the filters is that they get clogged with dust. On a paper filter the loose particulate crap falls off the filter surface and into the air box, but the oil filters just mop it all up. While no one in their right mind would off-road an FR-S, dusty roads, wildfires, and gravel/salt spray clogged my K&N's a lot faster.

And even if I was super careful cleaning them, I always found a bit of oil downstream from the filter in the intake.

$50 annually .. not bad

Same reasons I won't fit a oiled filter again.

are you a dumbass or just pretending to be?

if there is no increase in power, that means there is no increase in air intake, which means none of your claims are accurate, which means you just wasted 50 dollars.

what's more, you feel it necessary to coverup your useless splurge by posting the same K&N rhetoric that they have on the back of their products hoping that if more people make the same mistake then somehow it would all end up being a positive thing.

:bonk:

K&N Oil filters are hype, i used to have one, after 1 hour of driving i forgot i even put it there, never again.

You're better off taking a 50 dollar bill and just taping it to your air box, it will have the same effect.

:popcorn:

We did - it picked up 1 1/2 HP when we removed the filter entirely.

i wonder how much more power could be made if you took the entire airbox off ;)

my first mod will be to remove the throttle body, WOT ALL THE TIME:burnrubber:

[QUOTE=7thgear;264372]are you a dumbass or just pretending to be?

if there is no increase in power, that means there is no increase in air intake, which means none of your claims are accurate, which means you just wasted 50 dollars.

what's more, you feel it necessary to coverup your useless splurge by posting the same K&N rhetoric that they have on the back of their products hoping that if more people make the same mistake then somehow it would all end up being a positive thing.

:bonk:

K&N Oil filters are hype, i used to have one, after 1 hour of driving i forgot i even put it there, never again.

You're better off taking a 50 dollar bill and just taping it to your air box, it will have the same effect.[/QUOTE]

This is a good line. I laughed out loud at work. :)

I just ordered one, $41 shipped. I had one in my NC2 miata and it did sound better.

How much is the OEM paper filter?

^^^This, I think keeping it buttoned up will help with heat soak.

Wow. Brutal. :iono:

This weekend I'll be installing Accelerate Performances's Short Ram-To-Cold-Air-Intake.

Expect a full review with pictures accordingly.

Any questions about it right now, ask Don@Accelerated.

A little update: I removed the K&N drop in put back the OEM filter. There is definitely a difference. Nothing to be amazed about, but there is definitely a difference in response, sound and acceleration in the higher RPM's.

I will be installing an intake system, that's why I removed the drop in, to return it and put that money towards the system.