Air Filter

[guh2stroke]

What kind of filter/air intake should I run with a 5inch straight pipe? 93 W250

Should the pump be turned up just a little to adjust the amount of fuel?

 

[rlyons]

I just went to an ASA Modifieds intake system with an AFE filter from PDR and it is awesome. It has a wild turbo whistle that will rival and semi turbo whistle at higher boost pressures and my mileage has increased a little also as a bonus. So far I love it. I was running a swiss cheesed air box with a K&N filter. For sure turn your fuel up because in a diesel fuel + Air=Power. :-laf

 

[guh2stroke]

airfilter

thanks for the info, but is there a formula I would need to use for the amount to turn it up/ would it still be ok on the stock transmission etc... ?

 

[JSchlachta]

Roy,I see from you profile that you had the K&n filter did you notice an inprovement? I have the k&n now asn have the AFE adn am waiting on the asa intake.



If you have a picture can you post?



Thanks,

Jim

 

[Greenleaf]

ASA Modified w/aFe

Sorry. Can't see the aFe. It has an attatchment built onto it to slip over the 4" pipe and then you secure it with a 4. 5" clamp or T bolt clamp.



The aFe I use is about the same size as the factory filter element. Minus the air box. I also use the water repelent/pre filter attatchment.



The end of the assembly (filter end) is supported by a rubber shock/steel strap that fastens onto the inner fender well. You do not want the air filter itself to bounce 'round on the inner fender well.

 

["Mad Max"]

Hey that Intake looks familiar Looks good in there GL. You'll have to shoot me that pic so I can add it to the website.



Fellas, if interested you can hit the website link below in my sig block for more info on the ASA Intakes and more pics/colors.



- Max

 

[rlyons]

I don't have picture yet but I will. Yes i did see an improvment over the K&N. I saw about one mile per gallon increase in fuel mileage and I think a slight increase in seat of the pants power. The turbo whistle is worth the money to me. I haven't been able to dyno it yet but I want too in the near future.

 

[CumminsKid]

Can you buy the ASA intake with the afe rather than k&n? Where do you purchase these? I went to the asa website it shows a k&n filter in the kit.

cummins kid

 

[JSchlachta]

getting mine from piers. http://www.piersdiesel.com/

 

["Mad Max"]

CumminsKid -



Currently our Intakes are available from PDR and of course on-line direct from ASA.



PDR sells our Intakes with the AFE - that is the filter they endorse verse the K&N, however both are good filters. Currently if you order direct from ASA you would get the K&N because that is what I started with and currently have in stock. Once I sell out of the K&N's I will switch to the AFE's to support PDR.



The Intakes can be ordered without a filter (in half the cases the customer already has an aftermarket filter).



Any orders or discussion of prices has to be done over PMs, e-mail, or phone. TDR guidelines do not permit sales discussions over the TDR threads as that would be direct solicitation. However, discussions of performance, avilability, and vendor locations is permitted.



- Max

 

[CumminsKid]

Out of curiosity does anyone know how much more horsepower the intake with an AFE will get you? I'm pretty interested in getting the kit every one else seems to have a large variety of choices in the aftermarket now first gennersget an intake !

 

[Sri Ram]

Mad Max: I assume your intake will work with Fleetguard BHAF too…

 

[rlyons]

Finally got some pictures of my intake today.

 

["Mad Max"]

I can answer the hp question.



What we (PDR and I) discovered was that the Intake actually shifts the horsepower and torque curve to the left, meaning the power comes on sooner and then maintains the power throughout the curve until the engine defuels.



From the tests there actually does not seem to be a measureable top end hp benefit, and we believe that is because no matter what the intake is made of when the turbo is spinning at max rpm it doesn't care what the tunnel is - it makes the power regardless. The biggest gain for top end power is getting max fuel, and if you add the two together you can get dramatic power increases.



Because the airflow is smoothed out the turbo can spool up much sooner and the power comes on hard right after idle. That seems to be the majority of the feedback I have received after an install. For sure the big horse trucks will throw you back in your seat right off idle.



Sir Ram - The BHAF's fit good. Pretty much any filter that has a 4" clamp-on outlet will fit our Intakes, and the bigger it is the better.



rlyons - That looks real good. That is the AFE? I sent you a PM regarding the pics.



There has been some question about rain/water hitting the filter and resulting performance issues. There has been no problems reported as a result of rain or water seeping on the filter. Essentially any water that drips on the filter will atomize and have no impact to the performance. The water injection systems are directed right into the intake manifold and can act as a huge horsepower surge. When I get the twins done on my '93 it will have the Snow kit, and that should be big fun indeed :-laf .



- M2

 

[rlyons]

Yes that is the AFE. I will send youthe pictures and feedback as soon as I can get on my home computer. So far I love the intake setup and water is not an issue and believe me we know rain here in NW Florida!

 

[mysteryman]

The best air filter is the one we put in the trucks when they were built !

They protect the engine properly and allow you to get as much as 500K before overhaul... .

What kind of filter/air intake should I run with a 5inch straight pipe? 93 W250

Should the pump be turned up just a little to adjust the amount of fuel?

 

[Paychk]

Do you think the filter in this picture would properly protect the engine?



#ad

 

[cerberusiam]

but is there a formula I would need to use for the amount to turn it up

The formula you want to use is related the boost that is needed to feed the fueling curve. There was a post a while back that did some rough figures to compute the airflow needed for boost levels. Opening up the exhaust, adding fuel, etc will all increase the amount of air that needs to be in the engine to support the wanted power levels. Without taking into account elevation and all the other variables:



0 Boost/Idle - 360 CFM



15 psi Boost - 720 CFM



35 psi Boost - 1440 CFM





The stock filter works fine if you stay under 20 but is a bit of a restriction over that. The K&N seems to work fine in that range also and the stock air box. Pushing the boost levels up and exposing the K&N as an open element has the potential for unwelcome events. Humid wet areas the problem is minimal but out here in the desert 30 lbs of boost and a K&N is a recipe for disaster. The AFE and big Fleetguard are the top of the line units and work well to high boost levels. Add a water resistant prefilter and your good for 50 lbs of boost but you had better get Scott and Max to work some magic on that air flow.

 

[sdstriper]

Oil samples would tell the tale. With a factory filter in that box it looks like you have about 9,000 miles of test filters to play with...