New Air Intake
Thread Starter
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Laughing Gas
Joined: Aug 2005
Posts: 831
Likes: 0
From: Port Elgin, On
New Air Intake
Hey All!
I just installed a new air intake on my truck, the Donaldson AIS from Riffraff to be exact and when I did the first WOT the filter minder went to max and I got the light on my dash saying my filter was clogged??
After all the reading I did I understood that this system would flow better than stock and better that the aftermarket AFE oiled filter that I had on the end of my intake. Did I do something wrong? Am I missing something?
I just installed a new air intake on my truck, the Donaldson AIS from Riffraff to be exact and when I did the first WOT the filter minder went to max and I got the light on my dash saying my filter was clogged??
After all the reading I did I understood that this system would flow better than stock and better that the aftermarket AFE oiled filter that I had on the end of my intake. Did I do something wrong? Am I missing something?
Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
Did you do the Zoodad mod? Google it or search on YouTube that will help you get more air through the filter. It makes a difference on my truck with AIS Filter, the minder still closes up but no light. No chip either...
https://www.ford-trucks.com/forums/7...mod-today.html
https://www.ford-trucks.com/forums/7...mod-today.html
Lead Driver
Joined: Apr 2011
Posts: 8,259
Likes: 346
From: Northern California
Back when the AIS was introduced I had the opportunity to get with an engineer from Donsaldson for a Q&A on the filter.
The AIS it was never promoted as “flowing better” then stock it is in fact much better at filtering dirt and its dirt holding cabability. The filter minder is just a simple vacuum gauge and it tuned to work correctly on a stock motor, with mods such as tunes you will pull more vacuum which trips the minder, Just because your engine pulls more vacuum doesn’t mean the filter is not allowing adequate flow. When pressed the engineer didn’t have a direct snswer on many HP the filter would support but the flow numbers he did have suggest at least 400 and still provide the dirt filtering it was designed for.
Remember, the harder the engine sucks the more dirt it will pull through the filter medium.
The AIS it was never promoted as “flowing better” then stock it is in fact much better at filtering dirt and its dirt holding cabability. The filter minder is just a simple vacuum gauge and it tuned to work correctly on a stock motor, with mods such as tunes you will pull more vacuum which trips the minder, Just because your engine pulls more vacuum doesn’t mean the filter is not allowing adequate flow. When pressed the engineer didn’t have a direct snswer on many HP the filter would support but the flow numbers he did have suggest at least 400 and still provide the dirt filtering it was designed for.
Remember, the harder the engine sucks the more dirt it will pull through the filter medium.
Thread Starter
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Laughing Gas
Joined: Aug 2005
Posts: 831
Likes: 0
From: Port Elgin, On
Thanks for all the replies!
John, I did not do the zoodad yet, I had intended to do it yesterday but I ran out of time. My plan is to do it this weekend. Do you think it will fix the problem?
Pirate and Timmy, I'm pretty sure it was Rich (Tugley) who posted a comparison of the popular air filters and the airflow each would allow. I made a mental note to go with the AIS and that is about as clear as my memory is on that.
When I get a chance I will do a search and see if there were any more details regarding AIS.
Paul, that would be good news and a simple solution. I'll check and see if I have mine around still.
John, I did not do the zoodad yet, I had intended to do it yesterday but I ran out of time. My plan is to do it this weekend. Do you think it will fix the problem?
Pirate and Timmy, I'm pretty sure it was Rich (Tugley) who posted a comparison of the popular air filters and the airflow each would allow. I made a mental note to go with the AIS and that is about as clear as my memory is on that.
When I get a chance I will do a search and see if there were any more details regarding AIS.
Paul, that would be good news and a simple solution. I'll check and see if I have mine around still.
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Cargo Master
Joined: Jan 2009
Posts: 2,800
Likes: 31
From: OKC, OK
What AFE did you replace? If it was the AFE II then no the AIS will not out flow this intake. I not know about the AFE oiled filter but I run the pro dry S and only trip the STOCK filter minder when it starts getting plugged.
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Postmaster
Joined: Nov 2015
Posts: 4,807
Likes: 125
From: Colorado Springs
Thanks for all the replies!
John, I did not do the zoodad yet, I had intended to do it yesterday but I ran out of time. My plan is to do it this weekend. Do you think it will fix the problem?
Pirate and Timmy, I'm pretty sure it was Rich (Tugley) who posted a comparison of the popular air filters and the airflow each would allow. I made a mental note to go with the AIS and that is about as clear as my memory is on that.
When I get a chance I will do a search and see if there were any more details regarding AIS.
Paul, that would be good news and a simple solution. I'll check and see if I have mine around still.
John, I did not do the zoodad yet, I had intended to do it yesterday but I ran out of time. My plan is to do it this weekend. Do you think it will fix the problem?
Pirate and Timmy, I'm pretty sure it was Rich (Tugley) who posted a comparison of the popular air filters and the airflow each would allow. I made a mental note to go with the AIS and that is about as clear as my memory is on that.
When I get a chance I will do a search and see if there were any more details regarding AIS.
Paul, that would be good news and a simple solution. I'll check and see if I have mine around still.
New User
Joined: Nov 2007
Posts: 12
Likes: 0
From: Gold Canyon, AZ
The stock 6.0 intake uses a similar Donaldson/AIS type air filter that is said to be able to support 500+ HP. The air box on the 7.3 AIS is what I think is restrictive. I have a heavily modified AIS filter box that I installed a Donaldson air filter minder, a real vacuum gauge. Limited testing I have pushed 42 pounds of boost with 11 inches of H2O at the filter. I don't know how much HP I'm leaving on the table with this "restrictive" intake. Most diesel rigs want filters changed at 20-25 inches. I think the AIS is a great filter for near stock, chipped trucks. Open up the box as much as you can with all the standard tricks and you'll have a great filtering, quiet intake.
It's a Van Gogh
Joined: Feb 2010
Posts: 7,812
Likes: 1,335
From: Elk Grove, CA
"Sleeving" it by cutting a 3" hole in the side and routing a trimmed
as a sleeve to the fender hole helps with getting the air in there. That's the only OK place to put another hole in the box.
And yes Tug did a nice experiment with the filter minders, result is the OE is harder to trip than the AIS version. So if you want to avoid a light on the dash use the OE. But if you want to ensure best flow for larger injectors, using the AIS version is an easy way to see when airflow may be less than desired. I'm on stock sticks so I use the AIS version, no problemo.
And yes Tug did a nice experiment with the filter minders, result is the OE is harder to trip than the AIS version. So if you want to avoid a light on the dash use the OE. But if you want to ensure best flow for larger injectors, using the AIS version is an easy way to see when airflow may be less than desired. I'm on stock sticks so I use the AIS version, no problemo.
Thread Starter
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Laughing Gas
Joined: Aug 2005
Posts: 831
Likes: 0
From: Port Elgin, On
Thank you David and Rick.
I did the zoodad mod on Sunday, but I did the updated one behind the grill. It is very nice in the sense that it can't be seen. It did not improve things however. On a test drive just after, the filter light came on at just half throttle! My truck is mildly upgraded, I wouldn't think there would be any way for it to require more air that the AIS would be able to deliver.
I think my path forward is to find my stock filter minder and see if that makes any difference. If it trips even the stock one then I guess I will be putting another hole in the box.
I did the zoodad mod on Sunday, but I did the updated one behind the grill. It is very nice in the sense that it can't be seen. It did not improve things however. On a test drive just after, the filter light came on at just half throttle! My truck is mildly upgraded, I wouldn't think there would be any way for it to require more air that the AIS would be able to deliver.
I think my path forward is to find my stock filter minder and see if that makes any difference. If it trips even the stock one then I guess I will be putting another hole in the box.
Fleet Mechanic
Joined: Dec 2005
Posts: 1,254
Likes: 120
I do recall reading how some, when they added the new AIS setup, had the same issues with the filter monitor triggering often due to it being more sensitive. When I did mine I re-used my stock filter monitor because of the threads I had read about it. I have a few links below from users with similar complaints about the monitor.
You are on the right track.
https://www.ford-trucks.com/forums/1451365-ais-restriction-gauge.html
https://www.ford-trucks.com/forums/1400893-revisiting-ford-ais-airflow-rates.html
TIm M