What is the best flowing air filter for max boost?
What is the best flowing air filter for max boost? So in trying to find the most air to my blower, I need to find some info in finding the best flowing air filter (while still running an air filter for its protection).
I currently have a large tubular shaped K&N air filter approximately 14 inches long and maybe 4-5 inches in diameter.
I have seen some designs that are more of a round circular shaped made by different companies as well, but the problem is I have no idea what the CFM or comparison of air movement ability they have between each other.
Is there an air filter website or something that has different flow specs between different air filters? Does anyone have any results with the round circular air filters I am talking about? What about just large air filters in general.
Trying to find a quick solution here, and need info.
I currently have a large tubular shaped K&N air filter approximately 14 inches long and maybe 4-5 inches in diameter.
I have seen some designs that are more of a round circular shaped made by different companies as well, but the problem is I have no idea what the CFM or comparison of air movement ability they have between each other.
Is there an air filter website or something that has different flow specs between different air filters? Does anyone have any results with the round circular air filters I am talking about? What about just large air filters in general.
Trying to find a quick solution here, and need info.
are you talking about the ones shaped like a mushroom? Like the type that lots of Supra's use? If so, your better off sticking with a cone style. The mushroom ones are more for tight clearance. I run an Airaid, they have a synthetic layer on the inside to keep the filter oil from sucking through. they flow the same as a K&N
All this is good info, however where are you finding the flow readings from K&N? Checking out thier website it seems they have tons of info on the filter itself, but I didn't find any flow readings to really compare where it counts.
Anyone got a link?
Anyone got a link?
I've done some research on this. Bottom line is foam flows more than cotton given a similar size filter. If you're looking for a single 1000+hp filter w/o restrictions look at RV or big rig filters. I found a big rig foam filter that wasn't too big and flowed the same cfm as my F2 procharger. The problem is making room in the car for it.
Well, foam may flow better, but I am somewhat concerned about it actually filtering as well as a K&N.
Do you guys reccomend the round straight filters over a cone shaped filter?
Do you guys reccomend the round straight filters over a cone shaped filter?
Trending Topics
A filter is only as good as the inlet to the blower ! The blower inlet is normally what causes power lose and until you make some kinda change to that the air filter no matter how big or well it flows its gonna be the weak link.
Personally I like the K&N part number RU-3220 its rated for around 900cfm. but the K&N part number RE-0870 also says it rated for around 900cfm
Personally I like the K&N part number RU-3220 its rated for around 900cfm. but the K&N part number RE-0870 also says it rated for around 900cfm
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo I use a big 12" cone K&N with the closed top. I've seen a lot of people using the more square shaped filters lately, especially with big twin screw blowers, and they are probably more sensitive to inlet restrictions.
Did a dyno test with the large spectra code filter you can buy at the parts store. 1140rwhp with an auto with the filter off. 1090rwhp with it on. At 625rwhp and at 800rwhp there was no change in power. Granted this was a turbo car so that may affect why the power did not drop vs the blower cars may see a drop in boost, lowering HP.
Did a dyno test with the large spectra code filter you can buy at the parts store. 1140rwhp with an auto with the filter off. 1090rwhp with it on. At 625rwhp and at 800rwhp there was no change in power. Granted this was a turbo car so that may affect why the power did not drop vs the blower cars may see a drop in boost, lowering HP.
To add to this, i read a pretty good article that Spectre Filters flow better then K&N
Ben, the height of the pleats on the filter makes the biggest difference on filters similar in shape, and can make a smaller filter flow better than a bigger filter. The taller the pleat, the more surface area there is, the less resistance there is. On K&N's site you'll see where they have the amount of oil each filter requires, the more oil it requires, the more surface area there is, the better it will flow. Hope that helps 
Just talked.. Said the flow rate on a cone filter can be improved by about 10%, by flowing the air from the outside in..They see less turbulence that way, due to reduced direction changes.
In my case we were discussing the 9831 filter and canister assy they make.
Just like FOX News.. We report, you decide!
A filter is only as good as the inlet to the blower ! The blower inlet is normally what causes power lose and until you make some kinda change to that the air filter no matter how big or well it flows its gonna be the weak link.
Personally I like the K&N part number RU-3220 its rated for around 900cfm. but the K&N part number RE-0870 also says it rated for around 900cfm.
I wanna see you test this on your car vs. the normal cone style
K&N RX-4140 - K&N XStream Universal Air Filters
Personally I like the K&N part number RU-3220 its rated for around 900cfm. but the K&N part number RE-0870 also says it rated for around 900cfm.
I wanna see you test this on your car vs. the normal cone style
K&N RX-4140 - K&N XStream Universal Air Filters
The RU-3220 is the same (or very close) as what I had originally. This was replaced by Bill with a smaller unit (which is NOT what I wanted). The RE-0870 is definatly smaller, and I find it hard to believe flows the same as the 3220 (but I understand if they "claim" the same CFM. I was looking earlier at a style similar to the RX-4140. I like how the end of the filter is not rubber, but more filter material. The RX-4140 itself is a fairly small filter, so maybe something of the same design except near a foot long might be the best way to go.
Ben, the height of the pleats on the filter makes the biggest difference on filters similar in shape, and can make a smaller filter flow better than a bigger filter. The taller the pleat, the more surface area there is, the less resistance there is. On K&N's site you'll see where they have the amount of oil each filter requires, the more oil it requires, the more surface area there is, the better it will flow. Hope that helps
I think from what I am gathering that the biggest K&N I can fit will yeild me the best results. It's really going to come down to doing some measuring and trying to see what I can fit in there.
I remember reading a few old post from guys who build turbo kits they said the AEM dry flow filters ended up being the best flowing filters. http://www.aemintakes.com/dryflow_air_filters.htm
I remember reading a few old post from guys who build turbo kits they said the AEM dry flow filters ended up being the best flowing filters. http://www.aemintakes.com/dryflow_air_filters.htm
I use a Spectre 9738 or 9736 (same filter just different color) which they claim flows 1100 CFM.
How much power are you trying to make? What size pulley combination are you using on the D1?
How much power are you trying to make? What size pulley combination are you using on the D1?
I am maxed out for pulley combo on my D1SC, and really its not about a number, I am just trying to make the most with what I have. The smaller filter that got put on is not as efficient as a larger one.
I have found the largest filter I could. It will be a while before it arrives. My only concern is that it may actually be too large for the area I have to put it in. Time will tell.
I think I have things pretty squared away at this point.
Thanks for everyones input!
I have found the largest filter I could. It will be a while before it arrives. My only concern is that it may actually be too large for the area I have to put it in. Time will tell.
I think I have things pretty squared away at this point.
Thanks for everyones input!