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Old 10-26-07, 02:12 AM
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MAF removel question

Does Anyone Know If You Can Take Off The Maf With Out A Computer If Yes Please Let Me Know
Old 10-26-07, 04:03 AM
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MAF sensor?
Old 10-26-07, 04:13 AM
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Ignoring the incorrect terminology, the answer is no. What exactly do you think it's there for?
Old 10-26-07, 04:46 AM
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Originally Posted by boriquaalexr
Does Anyone Know If You Can Take Off The Maf With Out A Computer If Yes Please Let Me Know
Yes, install a carburetor conversion kit. However, it would cost as much as a Microtech computer, which is far superior, so there really isn't much point in my opinion. Also, please ignore any of the internet or magazine articles and ads that imply the "MAF" system causes a significant reduction in power on a street car.

Originally Posted by NZConvertible
Ignoring the incorrect terminology
The EFI system is technically a MAF system, so the term used is correct in generic terms, just as if a Turbo II owner asked how to remove the supercharger.
Old 10-26-07, 05:59 AM
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considering out AFM's don't measure air mass directly, I could hardly call them a "mass air flow" sensor.
Old 10-26-07, 06:02 AM
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Originally Posted by Evil Aviator
The EFI system is technically a MAF system, so the term used is correct in generic terms...
Ah, but we're not talking about a "system", only the airflow meter. In common industry terminology, MAF (mass airflow) sensor refers to a hot-wire type airflow meter, not a moving-vane type like FC's have. Moving vane AFM's are not MAF sensors because they don't directly measure mass airflow. They measure air velocity and temp and the ECU calculates mass airflow from those inputs. But I know you know all this...
Old 10-26-07, 07:39 AM
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Yes you can, but you need the now discontinued HKS VPC (or similar unit) to remove it. If you can find a VPC it will set you back around $300 US dollars. Not to far off a megasquirt are ya?
Old 10-26-07, 09:54 AM
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thanks heard it could be done
Old 10-26-07, 11:00 AM
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They measure air velocity and temp and the ECU calculates mass airflow from those inputs. But I know you know all this...
Wouldn't mass density effect the "cooling" of the hot wire too? In which case it doesn't only measure airflow velocity.

Yes you can, but you need the now discontinued HKS VPC (or similar unit) to remove it
I was looking into this as well once but it seems you need specific rom chips to do so and I think the only FC chips out there are T2. According to the HKS site
Old 10-26-07, 11:52 AM
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I've NEVER had to use a computer to remove a afm. So the correct answer is that, yes, you can remove the afm without a computer. Just use you fingers to remove the plug and a socket to remove the bolts. .......Not humor.

It's the question that was the joke.

Any other tough questions?
Old 10-26-07, 04:08 PM
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Originally Posted by HAILERS
It's the question that was the joke.

Any other tough questions?
theres that old one with the woodchuck...
Old 10-26-07, 05:26 PM
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Originally Posted by RotaMan99
considering out AFM's don't measure air mass directly, I could hardly call them a "mass air flow" sensor.
... and most people would hardly call a turbocharger a supercharger, hence my original analogy.

I really hate Wikipedia, but it actually does have a somwhat correct definition in this case:
http://en.wikipedia.org/wiki/Mass_airflow_sensor

Feel free to look it up in your favorite engineering book. You may learn something.

Originally Posted by NZConvertible
Ah, but we're not talking about a "system", only the airflow meter. In common industry terminology, MAF (mass airflow) sensor refers to a hot-wire type airflow meter, not a moving-vane type like FC's have. Moving vane AFM's are not MAF sensors because they don't directly measure mass airflow. They measure air velocity and temp and the ECU calculates mass airflow from those inputs. But I know you know all this...
Yes, I know all this, and I also know that an AFM is a type of MAF sensor. I would be happy to visit NZ and give a quick class on the subject at your local engineering university or tech school if you guys pay my expenses.
Old 10-26-07, 06:06 PM
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****theres that old one with the woodchuck...***************************
************************************************** **************

How Much Wood
would a woodchuck chuck
if a woodchuck
could chuck wood?
As much wood
s a woodchuck would
if a woodchuck
could chuck wood

I believe I answered that one if the first months of last year. Do a Search for WOODCHUCK. .........humor........I'll stop now. No more. Done. Fini. Bon Bini
Old 10-26-07, 08:09 PM
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Originally Posted by RotaMan99
Wouldn't mass density effect the "cooling" of the hot wire too? In which case it doesn't only measure airflow velocity.
I think you misread my post. I was referring to a vane AFM.

Originally Posted by Evil Aviator
...I also know that an AFM is a type of MAF sensor.
Funny then how the term "MAF" wasn't used until the hot-wire AFM came along. Who really cares if you can make an argument that it's a "type of MAF senseor", that's not what they've ever actually been called.

Last edited by NZConvertible; 10-26-07 at 08:23 PM.
Old 10-26-07, 08:30 PM
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Originally Posted by NZConvertible
Ignoring the incorrect terminology, the answer is no. What exactly do you think it's there for?

Ironically, the word "terminology" is the wrong word in the sentence. "Terminology" is the study of terms. You would be stating that he would be ignoring the incorrect study of terms. The correct word is simply, "term".
Old 10-26-07, 08:58 PM
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Actually, a couple of dictionary definitions of terminology are "the body of terms used with a particular technical application in a subject of study, theory, profession, etc." and "the system of terms belonging or peculiar to a science, art, or specialized subject; nomenclature". Your meaning is also correct but rarely used.
Old 10-26-07, 09:58 PM
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Originally Posted by NZConvertible
Funny then how the term "MAF" wasn't used until the hot-wire AFM came along. Who really cares if you can make an argument that it's a "type of MAF senseor", that's not what they've ever actually been called.
Funny how the thermal anemometer (aka hot-wire anemometer or HWA) wasn't called a "MAF" until the automotive companies and internet crowd got wind of it. Who really cares if you can make an argument that it's a "MAF sensor", that's not what they've ever actually been called.

Originally Posted by RX7Tuner.
Ironically, the word "terminology" is the wrong word in the sentence. "Terminology" is the study of terms. You would be stating that he would be ignoring the incorrect study of terms. The correct word is simply, "term".
I think the sentence does read correctly when your definition is substituted for the word and the application of the noun is assumed. Additionally, as stated by NZConvertible, "terminology" has an alternate and more common meaning that is synonymous with "nomenclature".

My point with this, as well as my original point with the MAF term, is that some things are not necessarily incorrect just because they seem foreign to one's lexicon.
Old 10-26-07, 10:32 PM
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Originally Posted by Evil Aviator
Funny how the thermal anemometer (aka hot-wire anemometer or HWA) wasn't called a "MAF" until the automotive companies and internet crowd got wind of it.
Since this is an automotive website, discussing automotive topics including this one about an automotive component, what the automotive industry calls it is the most applicable term. I doubt the internet crowd has anything to do with it. I knew about automotive MAF sensors long before internet discussion groups were common. Probably from those old-fashioned book thingees...
Old 10-27-07, 06:06 AM
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NZ, yes I did misread your post, sorry. I seem to be doing that a lot lately.


Evil, why argue over this? The sensors measure exactly what they are called. Air Flow meter, measures airflow velocity where as Mass Air Flow sensors will measure the mass density or air. Im sure you could call the "thing" known as a AFM, a potentiometer right?


Originally Posted by from your wiki link
Hot wire sensor (MAF) - Unlike the vane meter's paddle sensing element, the hot wire responds directly to air density.

Vane meter sensor - The vane measures air volume, not mass, however by measuring the air temperature and pressure to determine air density.
I suppose calling a MAF, a MAF is wrong as well since it doesn't measure airflow. a Vane type does but it doesn't measure the mass density.

I also suppose putting both into a category of MAF sensors is incorrect as well since they don't measure Mass Air Flow directly, its up to the ECU to determin that.

So why not just stick with airflow meter and Mass air sensor or something of the sort

Gez, and this talk about what word to use, SHUT UP you cry babies

Last edited by RotaMan99; 10-27-07 at 06:22 AM.
Old 10-27-07, 05:23 PM
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Originally Posted by NZConvertible
what the automotive industry calls it is the most applicable term.
Oh, I agree that AFM is the most applicable term. I just disagree that MAF is an incorrect term.

Originally Posted by RotaMan99
Air Flow meter, measures airflow velocity where as Mass Air Flow sensors will measure the mass density or air.
I think you missed the part about the Air Flow Meter being a type of Mass Air Flow sensor, and therefore they perform the same function, despite going about it in different ways.

FYI the three most common EFI system types are:
1. Mass Air Flow
2. Speed Density
3. Alpha-N
I think you would agree that the AFM and MAF hot-wire sensors both apply to #1. (If those three terms are not familiar to you, feel free to research them, and you will see what I am talking about.)

Originally Posted by RotaMan99
Im sure you could call the "thing" known as a AFM, a potentiometer right?
No, the AFM contains a potentiometer, but it is not itself a potentiometer. However, the "thing" known as a TPS is a potentiometer, and if you use it as the primary sensor for fuel delivery, the system would be of the Alpha-N type as opposed to the Mass Air Flow type.

Originally Posted by RotaMan99
Evil, why argue over this?
Because the orginal poster was not wrong, even though a more accurate term exists.
Old 10-27-07, 05:46 PM
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You guys would argue about dogshit, no?
Old 10-27-07, 06:57 PM
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Originally Posted by Liltoflm
You guys would argue about dogshit, no?
Ha Ha Yea
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