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Not necessarily. There is data that nano filtration media can have better filtration with a lower pressure drop. But that doesn't mean that these filter manufacturers use a media that matches the OEM filtration requirements.
Not necessarily. There is data that nano filtration media can have better filtration with a lower pressure drop. But that doesn't mean that these filter manufacturers use a media that matches the OEM filtration requirements.
For someone ultra paranoid about filtration, the AttackBlue nicely fills that gap between OEM paper and the traditional aftermarket high-flow filters. It does have its drawbacks though, requiring frequent cleaning (every 10k miles) and full replacement almost as often as OEM paper (50k miles)
Originally Posted by RKCRLR
Yea, but they don't make a comparison under the same conditions to a OEM filter. The question becomes how good is good enough.
I've personally found aFe's dry media to be my favorite balance of increased flow, good filtering ability, and lifetime reusability w/occasional cleaning.
I've run K&Ns on countless vehicles going back 2+ decades, aFe's blue oiled cotton on a handful, and aFe's dry synthetic on my 3 most recent sports cars.
I currently have 1 Jeep with a K&N drop-in, 1 Jeep with a Mishimoto intake using their oiled cotton filter, and my C8 with the aFe intake w/dry filters.
Not necessarily. There is data that nano filtration media can have better filtration with a lower pressure drop. But that doesn't mean that these filter manufacturers use a media that matches the OEM filtration requirements.
I'd like to see that study if by an independent source that lists the metrics because I don't buy that at face value. The study I posted discussed Nano technology but still found that more flow equaled more particulate matter.
I'd like to see that study if by an independent source that lists the metrics because I don't buy that at face value. The study I posted discussed Nano technology but still found that more flow equaled more particulate matter.
Donaldson has shared quite a bit. GM has experimented with it, and Amsoil has used it too, with good results. I suspect cost is what's keeping it from going more mainstream, especially in OEM applications.
If he has ported intake, throttle body, headers, cat deletes …. He’s going to destroy the other car 1/8, 1/4, 1/2 mile and so on 😃won’t even matter if his buddy gets the hit/
Donaldson has shared quite a bit. GM has experimented with it, and Amsoil has used it too, with good results. I suspect cost is what's keeping it from going more mainstream, especially in OEM applications.
That's all swell but I've yet to see an indy study with metrics indicating it filters as well as cellulose.... put up or you know what. If it gained appreciable HP and filtered as well as paper they'd use it for the HP gains.
My take is it does not filter to the level of cellulose..... nor provide the vacuum they need for crankcase evacuation in the present set up...
That's all swell but I've yet to see an indy study with metrics indicating it filters as well as cellulose.... put up or you know what. If it gained appreciable HP and filtered as well as paper they'd use it for the HP gains.
My take is it does not filter to the level of cellulose..... nor provide the vacuum they need for crankcase evacuation in the present set up...
do you have the ability to provide everyone the data on your take? Put up or you know what?
Studies by those that sell them are usually not really studies. Note the material on the nano filters that were applied over cellulose because they did not filter as well as paper...or to increase filtration at the expense of flow.
Regardless, the results indicated more airflow = more particulate matter..... that is a physics property not yet nullified. This link is what I was referring to and I'd like to see a study of similar depth on any Nano filter with stated metrics and findings.
Finding in the abstract..."Research shows that filter material characteristics are closely related. Each increase in efficiency and accuracy of intake air filtration reduces engine components wear, but it is related to flow resistance increase in the engine intake system, which reduces its power, and increases need for more frequent filter servicing."
"A single layer polyacrylonitrile nanofiber filter is found to have minimum pressure drop resulting in higher quality factor for filtration applications. As the number of layers of nanofiber increases the pressure drop observed is higher compared to conventional filter."
This was demonstrated in the other study and why they put a thin overlay of nano poly over a conventional cellulose filter. A nano filter matrix alone will do the same thing as a conventional filter....more material less flow.
A nano 'screen' over a conventional filter would be excellent filtration but your gain would only be in filtration not flow/HP...if you are gaining flow/HP you are gaining less filtration.
In other terms the Blue filter we are discussing has a nano tech but the density is such that there is more airflow...it is the density of the material that affects filtration and airflow. The 'nano' part is basically meaningless if they open up the media.
Nano material is fine but when applied properly for filtration is more restrictive than cellulose (study above).
IOW, regardless of the medium it is really the density of the material that filters the airflow.... imo then this is simply a new way to 'sell' that is a bit of a con (New and Improved!). It looks better than the old oiled filters but is still not as efficient as cellulose because they wanted some HP gain.
So after reading the full thread, my takeaway is stick with the factory filter. My usage case is driving a daily streetcar and not racing. Spending dollars get a small horsepower gain versus the long term engine damage and wear you will have from the higher amount of very small damaging particles ingested has no value. Worked hard for my money and it's not worth it. There was a time in my life I did do mods like this... to each his own, enjoy your car!
aFe and AB dry filters both feature 99+% filtering efficiency. Paper filters are nothing more than a cheap disposable solution. Let technology work to your advantage at a minimal increase in cost.
Oiled cotton and dry synthetic isn't necessarily better for a street car that has to drive through construction zones and all
types of weather. Paper filters are used because they usually filter better than cotton or synthetic media. They are a single piece with no holes, cotton is loaded with holes and depends on vibrations and oil to trap particulates. There is a reason paper filters are still used on $100,000 cars and cost isn't it. They may not flow as much but they oftentimes DO filter better.
992 Porsche GT3 comes with paper filters
992 Porsche GT3 RS comes with BMS oiled cotton filters with a Porsche part number (from the factory) . It is assumed that the RS is going to spend much of it life on track but a standard GT3 might be a street car its entire life.
It is also true that the slight restriction is what allows the PCV to work properly. Everything on a modern car is designed as a system. Will you get more power from these light mods on an NA vehicle? Probably. But I think people forget that many companies make these parts NOT because they feel a need to design something better, but rather its an easy way to make money.
I am planning on installing an Attack Blue Air Filter in my MY23 Stingray Z51 this week. Has anyone who has installed one noticed any changes to your C8 in sound, performance, throttle response, etc?
Hi there Jim. I am glad someone finally asked something that I actually have experience with
So I bought mine several weeks ago, and ended up installing it myself with minimal hours having actually owned my corvette (my first one as well). I installed it, it was a fairly straightforward process and watching a youtube video on it made it very easy. My only concern was if i actually pushed the filter in all the way because at no point do you hear a click or some sort of tactile feedback telling your nerves that without a doubt, "its in". But im speculating that i wouldn't have been able to bolt the cover back on it if it wasn't in all the way. No codes were thrown and no check engine lights. The only thing I noticed is that in the my chevy app (the one where you can remote start your car) it says I need to change my air filter and says it has 0% left. Im not sure how to wipe that from the "memory" because obviously the filter is brand new.
To answer your question on sound, I don't really have an answer. I didn't notice anything at all. No sound, no power, no nothing. But keep in mind, I -just- got the car and I tend to be conservative with estimates and I tend to be on the cynical side when it comes to companies claiming you gain x amount of horsepower. In my cynical book, some people might lose 1hp in their endeavor. But at the end of the day, it was an easy install, and if I go off the spec sheet and with what people say, I can at least say my C8 has 500hp at the crank. Right people, cant I? I hope.
Anyways, I highly recommend you go for it, you'll be happy with it! Would love to hear from other people that installed the same thing
Cold air intakes and these filters are usually the first mod made to a car. I've been putting on CAI's since I had my 2005 GTO. They're basically inexpensive and easy to install. Then we buy into the snake oil that the car actually picks up a few horsepower. I don't buy it for a second that these CAI and filters actually pick up horsepower. They may sound better, but sound doesn't make a car faster.
It reminds me of this that we used to do in the 60's and 70's. No horsepower gain, but it sounds great.
I made the change and it sounded a little better (louder) to me, and it felt a little more responsive, although that's pretty hard to tell with only a few extra HP. It was an easy change, and like OldGoat said, it's inexpensive improvement. I do this to all my cars and motorcycles. On my bikes, I've really noticed the improvement in power. That dyno testing gives a good comparison between filters. The numbers are there, which is nice to see.
