Using MAF sensor as a Air Filter use indicator

[WY-Dave]

My understaning of the MAF is very null. But What I am thinking is by monitoring the MAF at a certain RPM, 3000 heavy flow, I can tell when the air filter is getting clogged. I never like the "just replace at *** miles". back in the day when AFs were $5 it really wasn't a big deal. But now as $$$ as they are, ate to through out money.

Filter in
Using TorquePro, I did a 3000rpm slow rev and held it here for about 2 secs and got 3110 cfm


took the filter out and sealed it back up and got 1414 cfm, HUH?


Did it again 1447 cfm


Then put the filter back in and got 3088 cfm


I had to go to work so I monitored the MAF and did a couple of drag strip launches and it would peak out at 3000+ cfm.


Trying to wrap my mind around the fact the the no filter readings are half what it is with a filter with 11K miles on it. The only thing I can think of is that the air filter straightens or smooths the air turbulence inside the box.

One think I would like see is that someone with a S&B intake slowly rev the engine to 3000 rpm, hold for a2 count ad see what their max is,

 

[Jwithing]

I'm curious as well. I'd imagine the Diablo trinity has this measurement in its data logging. I have a ported 6.4 intake manifold with the s&b. I can try to get a reading tomorrow if I remember.

 

[Wild one]

These might interest you guys.

Filter Minder® - Frequently Asked Questions

Want to learn more about our Filter Minder® products? We have several demonstrative videos to assist you.

filterminder.com

What is the Filter Minder®?

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

www.youtube.com

Two Guys Garage Features the Filter Minder®

Don't change an air filter before its time! Take the guesswork out of filter maintenance.

www.youtube.com

 

[WY-Dave]

I'm curious as well. I'd imagine the Diablo trinity has this measurement in its data logging. I have a ported 6.4 intake manifold with the s&b. I can try to get a reading tomorrow if I remember.

I guess I should have said this is for a 6.7 CTD. But may someone else with a reader and stock setup can post for future reference

 

[67440dodge]

Just a SWAG, but the filter helps direct the flow to the MAF sensor, thus giving the increased airflow. Once you remove it, the air just sorta swirls around with no place to go. Sorta like the old carb days where you'd flip the air cleaner over to get more airflow and more HP. Didnt work, but sounded cool.

HotRod or Car Craft or one of those mags did a airflow comparison test with different aftermarket air cleaners bunch of years ago. The one that flowed the best? A dual snorkel setup off a old big block car, think it was a Chrysler...

An interesting test would be with filter in place, then a CAI installed and see how the airflow compares.

 

[WY-Dave]

These might interest you guys.

Filter Minder® - Frequently Asked Questions

Want to learn more about our Filter Minder® products? We have several demonstrative videos to assist you.

filterminder.com

What is the Filter Minder®?

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

www.youtube.com

Two Guys Garage Features the Filter Minder®

Don't change an air filter before its time! Take the guesswork out of filter maintenance.

www.youtube.com

I looked at these before, but the way it is "calibrated" for flow, I can't find one that is specific to my application (or any specific one).

Middle video, "is calibrated to according to engine manufacturer specifications". Say take one that has "red" scale at 22(whatever the measurement is) might work for the CTD, but I imagine a 5.7 with a smaller intake diameter hose would not be the same scaling.

 

[bm02tj]

By the time your maf shows it is past time to change
A vacuum gage will work on air intake

 

[Wild one]

I looked at these before, but the way it is "calibrated" for flow, I can't find one that is specific to my application (or any specific one).

Middle video, "is calibrated to according to engine manufacturer specifications". Say take one that has "red" scale at 22(whatever the measurement is) might work for the CTD, but I imagine a 5.7 with a smaller intake diameter hose would not be the same scaling.

They tell you right in the calibration section to contact them for reconmendations.

Filter Minder® - Calibration

The Filter Minder® is calibrated per engine or vehicle manufacturer's recommendations.

filterminder.com

This is right in the calibration section

"Some vehicles with the Filter Minder® as standard equipment may use a higher calibration than the above guidelines. If in doubt, contact Engineered Products Co. for recommendations."

Or as stated by bm above buy a interior vacumn gauge and mount it inside the cabin,and monitor vacumn levels in the intake trac/tube.

 

[Wild one]

Just a SWAG, but the filter helps direct the flow to the MAF sensor, thus giving the increased airflow. Once you remove it, the air just sorta swirls around with no place to go. Sorta like the old carb days where you'd flip the air cleaner over to get more airflow and more HP. Didnt work, but sounded cool.

HotRod or Car Craft or one of those mags did a airflow comparison test with different aftermarket air cleaners bunch of years ago. The one that flowed the best? A dual snorkel setup off a old big block car, think it was a Chrysler...

An interesting test would be with filter in place, then a CAI installed and see how the airflow compares.

Nope it was the factory dual snorkle GM air cleaner with the tall lid,i read that article too,lol.The old carb GM air cleaner housings had the smoothest flow into the carb throat.They weren't easy to find,but you could easily duplicate them by pop riveting the snorkle off another single snorkle GM air cleaner making your own dual snorkle GM air cleaner.With a bit of tweaking they worked good on a Holley carb too. Pontiac's exhaust manifold heat stove was the easiest stove i found to modify if you lived in a colder climate and wanted to keep the carb heat option,and were running the air cleaner on something besides a GM motor .Done a few in my day,lol

 

[Jwithing]

These might interest you guys.

Filter Minder® - Frequently Asked Questions

Want to learn more about our Filter Minder® products? We have several demonstrative videos to assist you.

filterminder.com

What is the Filter Minder®?

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

www.youtube.com

Two Guys Garage Features the Filter Minder®

Don't change an air filter before its time! Take the guesswork out of filter maintenance.

www.youtube.com

Interesting. I'm going to have to take a look at this closer when I have more time. My initial thought is I may be able to screw this into my intake tube where the crankcase cent hose typically attaches since I plugged it on the tube and ran a separate filter for it. Their website looks a bit convoluted for a quick impulse purchase lol.

 

[WY-Dave]

They tell you right in the calibration section to contact them for reconmendations.

Filter Minder® - Calibration

The Filter Minder® is calibrated per engine or vehicle manufacturer's recommendations.

filterminder.com

This is right in the calibration section

"Some vehicles with the Filter Minder® as standard equipment may use a higher calibration than the above guidelines. If in doubt, contact Engineered Products Co. for recommendations."

Or as stated by bm above buy a interior vacumn gauge and mount it inside the cabin,and monitor vacumn levels in the intake trac/tube.

I guess I am just as lazy as they are to contact them as they are to do a product fitment chart

 

[WY-Dave]

I thought my MAF was further down the tube to the turbo, but it's in the air cleaner box lid. I will try it again with the lid off and see what that does. I also have a new filter and see what that does. I would really hate to find out that the 2 filters that I changed out at 15k & 30k was $$$ wasted.

 

[crash68]

I also have a new filter and see what that does. I would really hate to find out that the 2 filters that I changed out at 15k & 30k was $$$ wasted.

In all actuality until the filter is noticably visually clogged, it doesn't really affect forced induction of the CTD, the turbo will compensate for the higher pressure drop of the filter to achieve the commanded boost pressure of the engine.

 

[Wild one]

I guess I am just as lazy as they are to contact them as they are to do a product fitment chart

You're to lazy to pick up a phone and call them,their phone number is right on their page.Donaldson is probably the biggest air filter manufacture'r of industrial air filters in the world,probably worth the phone call.With the amount of differant vehicles on the planet,do you blame them for not having a specific fitment chart for every manufactured combination.

Filter Minder® - Highest Quality Indicators, Gauges, Switches and Sensors

Filter Minder® offers the highest quality air and fluid filter monitoring indicators, gauges, switches and sensors available.

filterminder.com

 

[Jwithing]

For anyone curious running the s&b 6.4 intake...

They claim the following numbers in their tests:

Stock - 19.63 in. H20 @ 761 scfm
KF1056D plug removed - 12.62 in. H20 @ 761 scfm
KF1056D plug installed - 15.57 in. H20 @ 761 scfm
KF1056 plug removed - 12.34 in. H20 @ 760 scfm
KF1056 plug installer- 15.22 in. H20 @ 760 scfm

All tests completed with no ccv or sensor(s). The KF1056D refers to the throw away, white, dry filter whereas the lack of a D indicates the red, oiled, washable filter. Plug removed/installed refers to the secondary side box plug with rubber cover.

I would imagine that readings may vary based on engine base plus supporting mods and what not.

I may be curious enough to pickup a filter minder I found on Amazon for $25. It has readings for 6,9,11,17, and 20 in. H20. It also comes with an 1/8" npt, so I can buy a 1/8" female npt to 3/8" male npt to thread it into the ccv fitting of the s&b intake tube, or replace their 1/8" with an 1/8" male to 3/8" male, whatever is easier to find for testing.

After thinking about it a bit more, it may be beneficial for me to try getting a cfm reading to guesstimate my realistic in. H20 range. I'm thinking if I find the right range, it'll be easier to use the filter minder that running a vacuum gauge into the cab. Also cheaper than buying a digital gauge to use for this purpose.

I've always been curious as to how long these aftermarket air filters really last.

If you feel like I'm thread jacking since you're talking about CTD, I can go start my own thread.

 

[67440dodge]

Nope it was the factory dual snorkle GM air cleaner with the tall lid,i read that article too,lol.The old carb GM air cleaner housings had the smoothest flow into the carb throat.They weren't easy to find,but you could easily duplicate them by pop riveting the snorkle off another single snorkle GM air cleaner making your own dual snorkle GM air cleaner.With a bit of tweaking they worked good on a Holley carb too. Pontiac's exhaust manifold heat stove was the easiest stove i found to modify if you lived in a colder climate and wanted to keep the carb heat option,and were running the air cleaner on something besides a GM motor .Done a few in my day,lol

Yup... now I remember,,, I got dual snorkle Chrysler on the brain cause that's what I got on my Coronet for the stealth look... People see that and manifolds and go "grandma car" hehe

 

[Jwithing]

Fyi... found this on Amazon for CTD...
DODGE RAM CUMMINS DIESEL AIR FLOW FILTER RESTRICTION SENSOR METER GAUGE MOPAR OEM https://www.amazon.com/dp/B007Z17DSY/ref=cm_sw_r_apan_glt_fabc_CMRWH9VYJW41YH7DFMYC

 

[WY-Dave]

For anyone curious running the s&b 6.4 intake...

They claim the following numbers in their tests:

Stock - 19.63 in. H20 @ 761 scfm
KF1056D plug removed - 12.62 in. H20 @ 761 scfm
KF1056D plug installed - 15.57 in. H20 @ 761 scfm
KF1056 plug removed - 12.34 in. H20 @ 760 scfm
KF1056 plug installer- 15.22 in. H20 @ 760 scfm

All tests completed with no ccv or sensor(s). The KF1056D refers to the throw away, white, dry filter whereas the lack of a D indicates the red, oiled, washable filter. Plug removed/installed refers to the secondary side box plug with rubber cover.

I would imagine that readings may vary based on engine base plus supporting mods and what not.

I may be curious enough to pickup a filter minder I found on Amazon for $25. It has readings for 6,9,11,17, and 20 in. H20. It also comes with an 1/8" npt, so I can buy a 1/8" female npt to 3/8" male npt to thread it into the ccv fitting of the s&b intake tube, or replace their 1/8" with an 1/8" male to 3/8" male, whatever is easier to find for testing.

After thinking about it a bit more, it may be beneficial for me to try getting a cfm reading to guesstimate my realistic in. H20 range. I'm thinking if I find the right range, it'll be easier to use the filter minder that running a vacuum gauge into the cab. Also cheaper than buying a digital gauge to use for this purpose.

I've always been curious as to how long these aftermarket air filters really last.

If you feel like I'm thread jacking since you're talking about CTD, I can go start my own thread.

No thoughts of highjacking. I think a the info that we all put in here might spread across the engine platforms. The winds here are howling at 50+ for the last 3 days and too lazy to the vehicle shuffle to get the truck in the garage to try the open lid test

 

[WY-Dave]

OK I think I *****'d the first readings. I will confirm that again hen I get home and do a couple of hard runs. I didn't pay too much attention to the engine rpms.

This time I did and kept to a slow build up and not using max value

Lid off propped up, niiiiceeee turbo whistle haha


Lid back on

 

[WY-Dave]

You're to lazy to pick up a phone and call them,their phone number is right on their page.Donaldson is probably the biggest air filter manufacture'r of industrial air filters in the world,probably worth the phone call.With the amount of differant vehicles on the planet,do you blame them for not having a specific fitment chart for every manufactured combination.

Filter Minder® - Highest Quality Indicators, Gauges, Switches and Sensors

Filter Minder® offers the highest quality air and fluid filter monitoring indicators, gauges, switches and sensors available.

filterminder.com

Yes I do blame them

If Eaton can do with their gears, https://www.eaton.com/content/dam/e...ormance-differential-application-guide-en.pdf

Hmm I wonder how many filters K&N has? https://www.knfilters.com/air-filte...e4PDgPfNJEXu98J8xc9C-ShY_XtL-QqQaAmFpEALw_wcB
Need I go on?