Testing AIS with SXE
Got Data?
Joined: Dec 2012
Posts: 4,245
Likes: 1,375
From: Lake Stevens, WA
I have an AIS coming tonight, I plan to do fender mod right away and get it in. Really curious to see how much noise reduction I will see compared to my s&b, should be a decent drop in the 2300+ rpm whistle. If it works well for me in daily driving and continues to do well towing the 5th wheel, I will have a nice s&b intake with a great condition filter for sale :-)
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Lead Driver
Joined: Jul 2017
Posts: 6,854
Likes: 2,332
From: WV
At the end of last year, with the truck stock, I was holding a steady speed on several parts of the foothills (in 3rd) and pass climb (in 2nd) at WOT. I can accelerate a few mph here and there, but she's giving all she has.
I have yet to tow this year with the free flowing exhaust I have now, and the PHP tow tunes. That will help some. With the stock turbo, I will be driving by EGTs and trying to stay out of surge territory.
The trip over Stevens pass is on the books for end of May, so I'll have more data shortly. Still using the stock air box with a new filter - seems to be sealed up pretty well at this time, and I have yet to budge the filterminder at 25psi.
I have yet to tow this year with the free flowing exhaust I have now, and the PHP tow tunes. That will help some. With the stock turbo, I will be driving by EGTs and trying to stay out of surge territory.
The trip over Stevens pass is on the books for end of May, so I'll have more data shortly. Still using the stock air box with a new filter - seems to be sealed up pretty well at this time, and I have yet to budge the filterminder at 25psi.
1) bone stock. I believe the AIS will support a stock truck in any aspect you throw at it.
2) you were using the stock box without issue. From my online research, the AIS should outflow a stock setup.
3) I don’t know that I’ve ever actually towed without a tune. So my experience with no WOT will be vastly different than yours I presume.
4) Turbo surge. If your turbo is still factory then you may get into this, especially now that the exhaust is opened up. I saw issues around 14-15 psi partial load. What I wanted to mention is this, I could get surge to stop by either lifting lowering boost or crowding the pedal and pushing past the surge. This was with a 6637, 4” exhaust, and tunes.
5) I see at least a billet wheel in your future…
FTE Chapter Leader
Joined: Jan 2005
Posts: 13,106
Likes: 4,714
From: Henderson, NV
At the end of last year, with the truck stock, I was holding a steady speed on several parts of the foothills (in 3rd) and pass climb (in 2nd) at WOT. I can accelerate a few mph here and there, but she's giving all she has.
I have yet to tow this year with the free flowing exhaust I have now, and the PHP tow tunes. That will help some. With the stock turbo, I will be driving by EGTs and trying to stay out of surge territory.
The trip over Stevens pass is on the books for end of May, so I'll have more data shortly. Still using the stock air box with a new filter - seems to be sealed up pretty well at this time, and I have yet to budge the filterminder at 25psi.
I have yet to tow this year with the free flowing exhaust I have now, and the PHP tow tunes. That will help some. With the stock turbo, I will be driving by EGTs and trying to stay out of surge territory.
The trip over Stevens pass is on the books for end of May, so I'll have more data shortly. Still using the stock air box with a new filter - seems to be sealed up pretty well at this time, and I have yet to budge the filterminder at 25psi.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
At the end of last year, with the truck stock, I was holding a steady speed on several parts of the foothills (in 3rd) and pass climb (in 2nd) at WOT. I can accelerate a few mph here and there, but she's giving all she has.
I have yet to tow this year with the free flowing exhaust I have now, and the PHP tow tunes. That will help some. With the stock turbo, I will be driving by EGTs and trying to stay out of surge territory.
The trip over Stevens pass is on the books for end of May, so I'll have more data shortly. Still using the stock air box with a new filter - seems to be sealed up pretty well at this time, and I have yet to budge the filterminder at 25psi.
I have yet to tow this year with the free flowing exhaust I have now, and the PHP tow tunes. That will help some. With the stock turbo, I will be driving by EGTs and trying to stay out of surge territory.
The trip over Stevens pass is on the books for end of May, so I'll have more data shortly. Still using the stock air box with a new filter - seems to be sealed up pretty well at this time, and I have yet to budge the filterminder at 25psi.
Got Data?
Joined: Dec 2012
Posts: 4,245
Likes: 1,375
From: Lake Stevens, WA
Given that, Jason, I'd like to keep using the stock air box if I can - it's quiet, and is not broken. Can I use it when I upgrade the turbo? I'm going to call KC and try and understand the differences between the KC balanced assembly and the KC 300X stage 1. If my housings are not scored, hoping a balanced assembly, stock airbox, BTM and ADs, or AD/30's with PHP tunes will be a nice setup for this truck, with a re-gear down the road. I'll get the AIS if you guys think the stock box will have issues handling the higher flow of the upgraded turbo.
CNCFAB
Joined: Apr 2020
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Given that, Jason, I'd like to keep using the stock air box if I can - it's quiet, and is not broken. Can I use it when I upgrade the turbo? I'm going to call KC and try and understand the differences between the KC balanced assembly and the KC 300X stage 1. If my housings are not scored, hoping a balanced assembly, stock airbox, BTM and ADs, or AD/30's with PHP tunes will be a nice setup for this truck, with a re-gear down the road. I'll get the AIS if you guys think the stock box will have issues handling the higher flow of the upgraded turbo.
Hotshot
Joined: Jul 2008
Posts: 12,782
Likes: 2,142
From: N.GA Mountains
I *think* the stock box ‘flows more’ than the AIS. AIS filters ‘better’ and has a lot more dirt holding capacity.
The stock box is prone to being assembled incorrectly and/or broken. The early boxes could suck the filter out of shape and allow dirty air past. That may be avoidable by monitoring filter minder and not allowing too much restriction.
I rarely see stock boxes that are intact these days.
The stock box is prone to being assembled incorrectly and/or broken. The early boxes could suck the filter out of shape and allow dirty air past. That may be avoidable by monitoring filter minder and not allowing too much restriction.
I rarely see stock boxes that are intact these days.
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Lead Driver
Joined: Jul 2017
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From: WV
Heres the post with the info. Turns out I found the wrong AIS(6.0), but Y2KW57 shared the correct one and it flowed the same. https://www.ford-trucks.com/forums/1...l#post19658728
Note that we believe this is filter flow only and does not include the box.
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Laughing Gas
Joined: Mar 2021
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While interesting, on their own those parameters would be hard to relate to real world predictions/results. The 6637 would probably be much easier to model mathematically vs the AIS and stock, as you'd have to account for losses from the inlets inlets on those whereas the 6637 pulls directly from the surrounding air.
If someone here is handy with flow simulations in solid works, you could rig up some kind of simple model of each box and get some solid insight as to what's happening.
If someone here is handy with flow simulations in solid works, you could rig up some kind of simple model of each box and get some solid insight as to what's happening.
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Lead Driver
Joined: Jul 2017
Posts: 6,854
Likes: 2,332
From: WV
While interesting, on their own those parameters would be hard to relate to real world predictions/results. The 6637 would probably be much easier to model mathematically vs the AIS and stock, as you'd have to account for losses from the inlets inlets on those whereas the 6637 pulls directly from the surrounding air.
If someone here is handy with flow simulations in solid works, you could rig up some kind of simple model of each box and get some solid insight as to what's happening.
If someone here is handy with flow simulations in solid works, you could rig up some kind of simple model of each box and get some solid insight as to what's happening.
I do believe the AIS box should flow better than the stock box. I know this is just one aspect but the snorkel is much larger on the AIS. I found the box itself crated a decent restriction so it only makes sense that the larger snorkel box would have less restriction, but I have no date to back that up. This paired with the filter flow ratings makes me believe the AIS flows a touch more.
Oh, and the AIS FM has historically been believed to pull in easier. This would make sense if the designers expected less restriction so therefore the dirty filter would need to show at a lower restriction point.
You are correct. I tried in vain to get other manufacturer’s flow ratings across the various filters. Could find no information with the same manufacturer across the differing filters except for the WIX. I really wanted to compare the Donaldson filters. I figured any manufacturer to manufacturer comparison was pointless unless they also specified the test method.
Laughing Gas
Joined: Mar 2021
Posts: 1,118
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Has anyone tried removing the end of the snorkel from the AIS intake tube to see what difference that makes?
CFM is a function of cross-sectional area when talking about air flow in a tube. Given that the end piece of the snorkel has a much smaller area than the main tube (and also adds frictional losses), perhaps removing it could yield less-encumbered flow?
CFM is a function of cross-sectional area when talking about air flow in a tube. Given that the end piece of the snorkel has a much smaller area than the main tube (and also adds frictional losses), perhaps removing it could yield less-encumbered flow?
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Lead Driver
Joined: Jul 2017
Posts: 6,854
Likes: 2,332
From: WV
I’m still loving the AIS and it is working well for MY application. I would say I’m at the edge of what it can support.
If a truck has larger than stock injectors, sees frequent high rpm, or regularly sustained boost above 25psi then I would say this is not going to be your best choice for intake.
PriusLover I believe you already have the AIS so in that case I would definitely try it. I would hesitate to recommend someone purchase new if any of the items listed above are a factor. Even my use is probably pushing it a bit. But it is so so quiet and looks factory…
If a truck has larger than stock injectors, sees frequent high rpm, or regularly sustained boost above 25psi then I would say this is not going to be your best choice for intake.
PriusLover I believe you already have the AIS so in that case I would definitely try it. I would hesitate to recommend someone purchase new if any of the items listed above are a factor. Even my use is probably pushing it a bit. But it is so so quiet and looks factory…