Is it possible to run dual MAF sensors on turbo setup so it won't max out?
12-10-2006, 10:36 PM
#1
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Is it possible to run dual MAF sensors on turbo setup so it won't max out? Would it be possible to use dual MAF sensor set up so the MAF sensor wouldn't get maxed out so quick/at all? You could just modify the signal coming from the MAF and join 2 into the same wiring. Is this possible?
12-10-2006, 10:41 PM
#2
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im not sure about dual mafs, but im pretty sure you can buy a larger aftermarket Maf that can handle the extra air for about the same price as two.
...but then again it would be cheaper to just switch to a speed density setup and get rid of the maf all together.
...but then again it would be cheaper to just switch to a speed density setup and get rid of the maf all together.
12-10-2006, 11:15 PM
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he is right about speed density.
with two mafs that doesn't make sense. think about it. 2 of the same size mafs in series... what would that accomplish.. both max out at 512g/s
a larger 100mm maf or 101mm maf would be better.
but Speed density done right, is no better than with the MAF
with two mafs that doesn't make sense. think about it. 2 of the same size mafs in series... what would that accomplish.. both max out at 512g/s
a larger 100mm maf or 101mm maf would be better.
but Speed density done right, is no better than with the MAF
12-11-2006, 04:27 PM
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I wasn't thinking 2 MAFs in a series, I was thinking about 2 intakes into the turbo therefore each would me measuring seperate airflow into the turbo, rather than being in a series....anyway just a crazy idea...
12-12-2006, 09:55 AM
#7
Harlan's twin turbo Firehawk did just that...he just had a "black box" stuffed with electronics that translated the two signals from the MAF sensors into something that the stock PCM could understand. Finding someone to make that black box is the tricky part...
So in short, yes it can be done, and has been done. Find someone smart to make a translator.
So in short, yes it can be done, and has been done. Find someone smart to make a translator.
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12-12-2006, 09:59 AM
#8
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Originally Posted by MeentSS02
Harlan's twin turbo Firehawk did just that...he just had a "black box" stuffed with electronics that translated the two signals from the MAF sensors into something that the stock PCM could understand. Finding someone to make that black box is the tricky part...
So in short, yes it can be done, and has been done. Find someone smart to make a translator.
So in short, yes it can be done, and has been done. Find someone smart to make a translator.
12-12-2006, 11:20 AM
#9
Apexi makes something that will read one maf, or average the two of them.
Their SAFC unit.
I never could get it set to recognize the type of maf sensor on the car when it was a v6.
Then I did the v8 swap and got some real tuning software...
(hptuners wasn't out yet for the v6 at the time)
Their SAFC unit.
I never could get it set to recognize the type of maf sensor on the car when it was a v6.
Then I did the v8 swap and got some real tuning software...
(hptuners wasn't out yet for the v6 at the time)
12-12-2006, 12:29 PM
#12
I am using one on one of my race cars. It even comes with the new flow data transfer table numbers for you to put in your tuning software for an accurate table. Here is a pic of it, http://www.lingenfelter.com/Merchant...001/LN4231.jpg
The part number is, LPE-4231_LPE-4232.
The price was very reasonable, I can get them in stock over here if you want me to get you one.
Here is a pic of it, http://www.lingenfelter.com/Merchant...001/LN4231.jpgThe part number is, LPE-4231_LPE-4232.
The price was very reasonable, I can get them in stock over here if you want me to get you one.
12-12-2006, 12:36 PM
#14
I used a twin maf setup many years ago. But that was because i was using 2 seperate intake throttle bodies on a custom intake runner system. I wanted to make sure that the vehicle could accurately count the air going thru both sides. But then i found that all i had to do was run 1 side and cut the maf reading in half and let the pcm monitor with o2 sensors on the other bank to make sure everything was still good on it.
The only reason for 2 ever to be needed would be for 2 seperate throttle bodies feeding an engine.
The only reason for 2 ever to be needed would be for 2 seperate throttle bodies feeding an engine.
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12-12-2006, 01:18 PM
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Jessie, the Lingenfelter maf will still max out at 511g/sec though wouldnt it? So for engines pumping more than that you are still left with only SD as a choice. Stock PCM wont read any values higher than 511g/sec.
12-12-2006, 01:32 PM
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Originally Posted by ringram
Stock PCM wont read any values higher than 511g/sec.
Unless Im wrong, as Im by no means an expert or even a novice with this stuff, just what I remember reading.
It would be the same as rescaling MAP tables to run 2bar.
wait4me-
what is the o.d. on that thing? Am I wrong with the above statement?
12-12-2006, 01:59 PM
#18
Originally Posted by slow
One question, WHY?
Factory pcm > a ghetto FMU setup.
Ryan
Factory pcm > a ghetto FMU setup.
Ryan
Because the factory PCM is limited on how it can understand. Think about it. You have to go with an aux computer system to patch the factory one or just go complete aftermarket and since the PCM interfaces with the rest of the car I doubt you want to pull it unless you are making a non-street car.
You just retain more functionality running both a factory pcm and the fmu in my opinion and it isn't jerry rigged if you do it right.
Try offering solutions instead of cutting them down.
12-12-2006, 02:31 PM
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Originally Posted by Fire67
Unless you rescale the table, in which case I understand you would loose half of your resolution. i.e. choppy readings
Unless Im wrong, as Im by no means an expert or even a novice with this stuff, just what I remember reading.
It would be the same as rescaling MAP tables to run 2bar.
wait4me-
what is the o.d. on that thing? Am I wrong with the above statement?
Unless Im wrong, as Im by no means an expert or even a novice with this stuff, just what I remember reading.
It would be the same as rescaling MAP tables to run 2bar.
wait4me-
what is the o.d. on that thing? Am I wrong with the above statement?
The VE takes much larger values so isnt limited in the same way.
