Direct Replacement Airbox Panel Air Filters: CFM / Flow

[BMR Tech]

I see AFE and K&N advertise CFM for their stock replacement filters.

I do not see AEM's CFM #'s....but it may be because I cannot get their site to work.

Anyways:

Stock: 378 cfm
K&N: 402 cfm
AFE: 554 cfm

Anyone have more data on this?

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[cbrtrx]

Cfm is only part of it must compare the pressure drop as well.

 

[jasonstang]

So you are telling me the 302ci Coyote spinning at 6500rpm sucking up about 568 cfm is only fitted with a 378 cfm filter?

 

[Jay-rod427]

Need pressure drop as stated, as well as test pressure. Could be vastly different results of the same thing.

 

[Sasuketr]

The one with the shortest fins, lower air contact area, and more breathable material one should have the lowest pressure drop! They all have similar design. Unfortunately that may result in worse filtration compared to others. The stock filter has the worse pressure drop but the best filtration among them all.

SVT did a comparison if i remember right back in the day with k&n, green filter, aem, afe, amsoil, and stock filter for the 5.0's.

 

[BMR Tech]

If you guys have pressure drop results, feel free to chime in with them ;)

 

[BmacIL]

No more data than what's provided. I had an aFE on a previous car and liked it for performance and ease of maintenance, so I picked one up for this car too.

 

[Gibbo205]

Oiled normally outflow dry, so if maximum flow and pressure drop is your goal get the Afe Pro Oiled panel filter for maximum flow or get the dry version for a little better filtration and no risk to your maf sensor.

On the stock air box I had best results with:
- Velossa big mouth (creates RAM air on stock air box at speed) and you can feel it when you punch the accelerator at 60-70mph
- Panel filter, I went Afe Pro Dry, but oiled should be worth another 2-3BHP on top.
- Airaid modular intake tube
- Removed sound tube

I found the above made a night and day difference to throttle sensitivity, in short normal now felt like sport mode and the car was super smooth.

With JDM tune, the car gain 30BHP and 40lb/ft at the flywheel, on the road gains would be more as a dyno cannot really replicate ram air from the velossa big mouth and a dyno cannot show you how well the throttle modulation improve and overall drive ability of the car.

 

[dubster99]

How do these drop ins compare with the aftermarket air intakes?

 

[4V Mayhem]

If you guys have pressure drop results, feel free to chime in with them ;)

LOL, ever since PMAS started talking about pressure drop with their new cai that has been the main topic. Now everyone is all about pressure drop.

 

[Rebellion]

There are 3 factors, from the little I know about compressed fluid mechanics: 1)flow(CFM), 2)pressure(psi), and 3)temperature.

The questions are: which of these plays the biggest factor in the performance of the car (depending on which is the bottleneck, I guess)?

and

how much can one compromise the other two, without negatively affecting the performance of the car.

I think one can reach a pretty good balance between the 3, but one can never optimize for all 3 at the time. So far, seems that flow is the most important, followed by pressure and lastly, temperature.

 

[DarkestHour]

LOL, ever since PMAS started talking about pressure drop with their new cai that has been the main topic. Now everyone is all about pressure drop.

Well yeah....that's been the idea for years now in intake design...

 

[MaskedRacerX]

No more data than what's provided. I had an aFE on a previous car and liked it for performance and ease of maintenance, so I picked one up for this car too.

That's what I'm thinking of picking up, combined with a Mishimoto intake hose and a tune (and my CB exhaust, even though I realize that's minimal gains).

Hoping for about 475HP with that setup!

 

[Coyote Red]

Still no "inverted" drop-in?? Dang, here goes $350 for a CAI.

 

[Terminator2]

That's what I'm thinking of picking up, combined with a Mishimoto intake hose and a tune (and my CB exhaust, even though I realize that's minimal gains).

Hoping for about 475HP with that setup!

Maybe with a really aggressive E-85 tune but other than that 475 chp is about 425 whp and you aren't touching that with an intake tube, drop in, and a normal tune.

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