omfg k&n

[R4D30N]

wow.. that's all i can say. i got a k&n air filter for 53$ after tax. Little did i know that was the best 53$ i ever spent.

my car had the airbox mod already done, but the same lackluster airfilter. this car is SO MUCH FASTER. it has a better sound, and severely better gas mileage. and the bonus? unlike an air intake, i lost no torque

if you haven't done this yet, DO IT.

[Letitroll98]

Yes

[JimW]

Ditto here, got my K&N for $0 dollars and gutted the airbox for $0 dollars, I also have an RSM intake pipe that cost me $0 dollars ;D

But with an exhuast mod, you can really feel and hear the intake/engine fighting with the exhaust note at 5800 RPM.

[R4D30N]

i actually like the engine "roar/whine" more then exaust

[JimW]

Either way its a pretty contagious sound, and it makes the car feel way more powerful.

Enjoy the new intake tho ;D

[Letitroll98]

Howard (dred98) has a link to a performance comparo of the K&N vs stock vs K&N and Air Box Mod on his Aurora webpage. home.achilles.net/~howardm/aurora/aurora.php

Briefly, it concludes you get about 7-10 hp and about 7-10 ftlb gain, mostly from the K&N, and both curves are broadened significantly, which is what adds most of that drivabilty improvement you feel in the seat of your pants. If you could conceivably add 15hp from an upgraded exhaust and 15hp from the larger throttle body, for a modest investment you could ride in a 290hp Aurora. hmmmmm. Meanwhile, I was still thinkin'.

[JimW]

If you could conceivably add 15hp from an upgraded exhaust and 15hp from the larger throttle body, for a modest investment you could ride in a 290hp Aurora

Welcome to my world. 300 bhp (bhp=at the crank) is the goal. Engine mounts recover addtional lost tq, that last on the list

[erw38]

I might have to "remod" the airbox and get the fram. for about 20 bux less then the k&n it can't be a bad thing. Plus, I read that the Fram may actually be a better (constructed) filter then the k&n. So, if they do the same thing, the Fram may be the way to go (at least with the $20.00 savings).

[Aurora40]

Letitroll98 said:

for a modest investment you could ride in a 290hp Aurora.

This would mean you'd have to be making about 230hp at the front wheels. I have yet to see anyone dyno their Aurora at close to this. I think you can definitely add some power with the intake and exhaust work, but I'm not sure you can add this much power.

Jim, engine mounts free up torque? I find that a little difficult to believe. What's the explanation behind that? If it's that the engine rocks, it probably moves about 1/4" in the mount at most. So even if the engine rotation were soaking up torque, it would only do that for about 1/10th of a second or less. The engine obviously doesn't continue to rotate in the mount, or eventually it would be upside down.

[scottydl]

JimW said:

Ditto here, got my K&N for $0 dollars and gutted the airbox for $0 dollars, I also have an RSM intake pipe that cost me $0 dollars ;D

Hey Jim, can you hook me up with some of that?!?

R4D30N, what are your specific "severe" improvements on the gas mileage?

[scottydl]

Also while we're on this topic...

Is there a specific K&N for Auroras, or is it common to air boxes on some other models? Anyone got the part number handy? I'd like to shop for one, but of course I've gotta find it as cheap as possible.

[dred98]

The air filter (for my Classic) is #33-2086. I believe it also fits lots of other models.
They have a website at
www.knfilters.com/

[erw38]

1997 OLDSMOBILE Aurora 4.0L V8 F/I - All Automotive Air Filter 33-2086

Eventhoug it says 1997 it will work for 95-99

here
is on for $53

www.proamauto.com - this company say you gotta call for "prices so low you gotta call" 1-800-847-5712


anyone know if the "green filters" are worth anything?

[dred98]

hah! Beetcha.

[erw38]

damn your fast........if I didn't modify my post I would have "beetcha"

[erw38]

www.bmwe34.net/E34main/Upgrade/Air_filter.htm

here are opinions of paper vs k&n filters

[dred98]

I didn't have to look anything up - I have a post it note on my monitor with all the info so I can get one next time I get paid.

[erw38]

So you are a cheater ;d
j/k

[dred98]

The comparisons on the Beemer site make for an interesting read, now I don't know whether to save my money or not.
That's not cheating by the way - I'm a civil servant and we never lie or cheat or steal - our bosses do enough of that already.

[hockeydad33]

On the price comparison I assume you are comparing the Fram Airhog to the K&N performance filter? SuperWalmart ahs the Fram Airhog for about $48.00 and the best I can find on the K&N is about $53.00. Does anyone know which is better?

[erw38]

I don't want to deter you from getting a K&N filter if that what you want, but the majority of users (on sites I read) say the the money paid vs hp increase (or loss) is not worth it.

[erw38]

I posted this awhile ago, but hopefully it will answer you question hockeydad.

erw38 said:

Be careful not to over oil the filter as you could damage the engine. I have read that there are some seals or some internal parts that may go bad if the air filter is not properly maintained. <---------- just stuff I read.......no need to kill the messenger

I also read the the Fram Air Hog (believe it or not) may actually be a better built filter. While they are similiar in construction, the air hog has the cotten woven together tighter. Like I said, this stuff is just some stuff that I read........take it or leave it ;D

[scottydl]

dred98 said:

The comparisons on the Beemer site make for an interesting read, now I don't know whether to save my money or not.

Hmm, I'm with you on that... the tests done by those BMW owners didn't exactly prove the K&N to finish with flying colors when compared to the stock paper filter.

erw38 said:

1997 OLDSMOBILE Aurora 4.0L V8 F/I - All Automotive Air Filter 33-2086

Eventhoug it says 1997 it will work for 95-99

here
is on for $53

www.proamauto.com - this company say you gotta call for "prices so low you gotta call" 1-800-847-5712

Well I called... a K&N for a Classic is $59.95, and a 2nd-gen (same filter for the 3.5 and 4.0 according to the rep) is $49.95.

[erw38]

$59.95 doesn't sound low to me

[Letitroll98]

I paid a couple dollars less at Auto Zone. Sound like another case of internet rip off.

[R4D30N]

I got mine for 53.00 after tax.

[kobalt]

When cleaning your k&n take care oiling it just enough, but not too much at the same time. Over oiling will kill your MAF (big bucks), and not oiling enough will kill your motor, as the filter will not filter harmful size particles (even bigger bucks). Careful.

As for the gains it is important to understand that comparisons between different cars make for different results. K&N gives the most gains on vehicles with a relatively straight intake path, like a Ford Contour or a 90's Chevy Caprice. BMW intakes are quite complex, and heavily resonated and will not benefit from a theoretical cfm increase. Not sure about our Auroras - they're kind of in between.

The verdict? To each is own IMO.

[R4D30N]

i promise you i felt a difference after changing the filter

[erw38]

Noone is doubting that you felt a difference. We are just questioning whether the K&N filter is worth the change in the long run. I know it lets more air through, but with that air comes dirt and as we all know dirt is not an engines friend.

[R4D30N]

it's an air FILTER. not an air dirter letter inner..