Cone Filters (944NA)?

[CJFusco]

Does anyone have a cone-conversion for their 944NA? If so, is it MSDS or a custom-job? Any power gain? Would you recommend this over the K&N drop-in? Pics would also be appreciated.

[Obin Robinson]

i've talked with 3 people that did it. all of them reported zero horsepower gains. the big difference is in SOUND.. the induction noise is louder.

but they all said that the improvement was not worth the $$$ paid. i can get you the e-mail address of a kid that did it, if you want me to.

good luck!

obin

[Kaos]

I have a Cylindrical K+N that I bought from Vertex. They provided an adaptor for the end of the airmeter, but did not provide any way to support the air filter. I guess those clowns at Vertex think it is a good idea to rest your air filter right on top of your alternator.

I had to custom make a bracket out of sheet aluminum to support the air filter and airmeter.

Total investment = $120
Power gain = 0
hp/$ = 0

I will have to agree that I am an idiot for wasting my money on it. Hopefully I can warn other people not to waste their money.


Kaos 1985/2

[1.2gees]

There's a guy on rennlist, who thinks he got power out of the filter alone, and none out of the maf itself...

I guess the sound gives you more power!
Ahmet

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It's all the driver...

[Dave951]

I bought one not for any claims in horsepower, but rather it was cheaper than replacing my broken airbox. I am enclosing the cone in a lexan box I made so that I don't actually lose power(from less dense air). The ONLY difference I have noted is that I can now hear my blow-off valve(actually a pretty neat noise).

Don't ever buy one in search of HP.

Dave

[ccus944]

One advantage of note to owners of early 944na models....Because of the location of the air tube at the wheelwell, early cars are very vulnerable to taking in water to the engine...The cone filter eliminates this danger on the early cars...I plan to convert for this reason alone...Cus

[CJFusco]

Well there you are. I guess I'm glad for not wasting my money. Thanks for all who replied, you probably saved me a good $120.

[ccus944]

Early cars are notorious for sucking in water through that wheelwell...even with a filter...You have to be driving through deep enough water...That is why they CHANGED the design on the later models....I live in Florida...yes, the sunshine state, but the water gets deep when it rains...so it is a legit concern for me...and worth the $$ to do it....anyone got one for sale, CHEAP?!

[1.2gees]

The early 944 will suck water in the engine ONLY if it's cover in the fender is missing.

I love driving in the rain, and through deep water, never had any problems!
Ahmet

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It's all the driver...

[TheStig]

I have a conefilter on my car. I took it to the dyno shop and only saw a 4 HP gain from it, I got more from my ignition wires, but there is more breathability in higher RPMs which is healthy for the engine, goto my site to see the setup

http://www.geocities.com/cheetah_andy/motor2.jpg

[hoff944]

Shaun: Are you selling that cone filter conversion set up for a dollar too? I'll take one for my Diesel Rabbit. I'm getting all kinds of great mods from this BBS for it.

[1.2gees]

You're the second person I've heard talk positively about cone filters on 944s Eurospec...

I think 4hp is a litte optimistic, and more from the wires is even more so. However, if your airfilter was old, and the spark plug wires were cracked, and not insulated well, then sure, even 30hp is possible! Just keep in mind, this isn't extra power, it's getting back to stock, MAYBE 1-2hp more, maybe.

The link to your website doesn't work.

PS: Keep in mind, when the car is moving, the stock intake set-up draws cold air from the wheel housing area, and it even has somewhat of a ram air (or slight supercharging more technically) effect at high speeds. So what you get on a stationary dyno may not be your actual hp on the road (and practically it's never dead on).

BTW, I'm interested about your upgrades, and your rear wheel horsepower, according to your dyno runs.
Ahmet

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It's all the driver...

[TheStig]

try these pictures:

[1.2gees]

All I see there is plug wires, and a cone air filter...

PS: You can turn that filter so the seam faces the bottom, and is not visible when looked at from above
Ahmet

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It's all the driver...

[TheStig]

I'd like to think of it as an aluminum thong that holds the mesh together...heheheh!!!!!

[Magnus_944]

Performance BMW tested different filters on an e30 325 with Scorpion exhaust system. I don't know much about how restrictive the stock airbox is on the bmw but it uses the same air flow meter as the 944na. This is their result:

Drop in filter:
Original (used): 171,2hp
Jetex: 172,1hp
Scorpion: 172,1hp
ITG: 172,2hp
RamAir: 173,2hp
K&N: 173,7hp

Cone filter:
Scorpion: 175,0hp
RamAir: 175,1hp
PiperCross: 175,3hp
K&N: 178,7hp
Jetex: 178,9hp

I have not read the test, I only got the numbers from a bmw mailing list. What do you think?

/Magnus

[CJFusco]

Hmmm interesting results. If someone were to get a MSDS cone conversion, do you think any K&N filters would fit to replace the MSDS cone?

Maybe I will invest in a cone....Agggg! I'm so conflicted!