Mass Air Flow Sensor?
- Thread starter JohnFurness
- Start date
You don't have a MAF to delete.
You *do* have an AFM, or Air Flow Meter, which is not the same thing. It is possible to replace it with some other air measuring system, however, it is not cheap. You'll need something like a MAFT Translator, which allows you to run a MAF instead of an AFM. Or move to a MAFT Pro, and you can run MAP instead of the AFM.
You *do* have an AFM, or Air Flow Meter, which is not the same thing. It is possible to replace it with some other air measuring system, however, it is not cheap. You'll need something like a MAFT Translator, which allows you to run a MAF instead of an AFM. Or move to a MAFT Pro, and you can run MAP instead of the AFM.
JohnFurness;1670298 said:
Well the other problem is that it won't run without it... In fact the whole damn engine is kinda big and ugly...
JohnFurness;1670298 said:
Um... what? Seriously going to say that? I sure hope you're trolling...
TurboSupra7;1670299 said:
No, they're not. Not even close.
TurboSupra7;1670299 said:
Incorrect...
MAF Mass Air Flow - converts the amount of air flow (often with a mechanical flap of sorts) to a voltage signal to an ECU
AFM - Air Flow Meter (laymens terms)uses a vortex design that causes a little mirror to flutter, uses a LED of sorts and receptor... long story short converts that to a Karman signal read in both a peak to peak duty cycle and/or hertz... even better with an Oscope...
Forgive me for not using proper scientific terms, just trying to state in a reader's digest version, but I can direct you to a several page article that explains it in detail...but never-the-less they are different both in design and the type of signal that they produce.
Poodles beat me to it...
sounds like you should probly just leave it alone for now...maybe do some research (not sying that to be mean)....i agree though that it is ugly as hell but disagree that the engine is ugly...i just wish it wasnt to cluttered and messy...seems the cheapest route is the hks vpc although they are hard to come by...best of luck in your adventure though....
hvyman;1670312 said:
I'm assuming he wants to drill a hole in his piping and stuff the sensor in there. Definately won't work regardless.
jrot;1670322 said:
I don't know why people see these engine as cluttered. Modern engines put covers over the engine to cover the clutter and older electronicly controlled carb'ed vehicles were rats nests of vacuum lines. The 7M was actually designed to look nice (look at the timing covers with the vacuum line that runs across is following the same line, valve covers, 3000 pipe...)
Drill a hole in your piping. I'll be the guy in your thread two days from now laughing at you because your shit won't run properly for the sake of space. Lol at ricers and their form over function attitude. Maft -trans is like $250. Either modify it properly, or leave it alone.
Mass air flow = instrument that measure mass/time (kg/s) through the sensor. Hot wire is the most common practical way of doing this. This is what you want to know in order to compute the engines volumetric efficiency and thus how much fuel to inject.
An air flow meter measures air velocity in a pipe of known size (m/s). In order to convert that to mass air flow, the density of the the material flowing in the pipe is needed which requires knowledge of temperature and absolute pressure and the material being measured (air in this case). The HAC and IAT sensors on the 7M supply these two missing pieces of data, and the ECU computes the mass air flow. Humidity can also be a factor but is ignored here.
A true hot-wire MAF is a superior solution and is used all over the place for process control in industrial systems. In the mid-80s when the MK3 was in development hot-wire MAFs were too expensive to be used in a commercial automobile application. Gm first used them in the late 80's early 90's.
An air flow meter measures air velocity in a pipe of known size (m/s). In order to convert that to mass air flow, the density of the the material flowing in the pipe is needed which requires knowledge of temperature and absolute pressure and the material being measured (air in this case). The HAC and IAT sensors on the 7M supply these two missing pieces of data, and the ECU computes the mass air flow. Humidity can also be a factor but is ignored here.
A true hot-wire MAF is a superior solution and is used all over the place for process control in industrial systems. In the mid-80s when the MK3 was in development hot-wire MAFs were too expensive to be used in a commercial automobile application. Gm first used them in the late 80's early 90's.
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Yes you can find them cheaper. Basic price tho has been 400-700. Then gen-II is 250 but it does not control timing like the pro.
With everything you need but its 750 and a not so reputable seller.
http://www.suprasport.com/Complete-MAFT-PRO-install-Solution_p_687.html
With everything you need but its 750 and a not so reputable seller.
http://www.suprasport.com/Complete-MAFT-PRO-install-Solution_p_687.html
is the IAT sensor integrated in the AFM? or is it located else where? also what is the little sensor that sits just behind the lower grille area? is that one of the sensors we are referencing here?
IAT is in the AFM. The thing in the bumper is the outside ambient temp sensor for the automatic A/C.
gottadiesel;1670307 said:
No mechanical flap. That is called in the automotive world "Vane airflow meter". It still measures volume, and mass is calculated.
Translated = The Karman vortex meter generates a frequency based signal by the "mirror" fluttering in the air stream and reflecting from the LED to a photocoupler. The faster it flutters, the higher the frequency. And this is more accurate than a vane airflow meter.
No forgiveness needed. Keep studying.
3p141592654;1671786 said:
This. ^
Mass air > speed density
Speed desnsity is useful in something like the MAFT-pro because it is tunable and removes the restriction of the air flow metering device in high horsepower applications.