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Discussion Starter · #1 ·
I have recently found out that the guys developing this device say it is capable of replacing our VAF. They are working on MK2 toyota supra VAF, and say the mazda one could be incorperated. What we need is someone local (with in reason) to make an effort and arrange to have their CAR flow tested so they can make this work with the F2T. They could flow test a VAF on a bench but they'd rather flow test it on a car.


This could be a great device.

MAFT is capable of replacing OEM MAF sensors with a GM 3" MAF which is non restrictive... it is only capable of doing fuel tuning AFAIK.

MAFT Pro does the above or can work with a MAP sensor.

A/F computer mode (uses stock maf/vaf)
MAF translator mode (uses GM MAF)
MAP(speed density) mode (uses map sensor)
boost control
IAT tempature sensor
Possibly timing control not sure on this for the MX6

Read more here

http://www.maftpro.com/info.shtml

Join in the discussion and contact TurboBob with questions or if you are willing to do some flow testing for them.

http://www.fullthrottletech.com/showthread.php?t=1454

I have no idea where they are located, but it could possibly be near
Clinton Twp. MI
 
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Discussion Starter · #3 ·
I have seen the toyota VAf and they look the same. Hopefully people will actully read this thread and get a car to the guy.
I have a toyota VAF from my 86 cressida sitting here (same as a mk2 vaf) and they are subtly different in resistance readings and shape. Probalby different flow.

But i am thinking this is good news for the MX6
 

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Don't really mean to be negative here, but is the "restrictive" VAF really what's holding up the F2T in terms of performance? Yeah the VAF isn't optimal, but I think there are other things holding up the F2T besides the airflow meter, i.e. the nature of the low-reving truck engine that is the F2, stock ECU capabilities, etc. I'm under the impression that if you really want balls-out performance with F2T you won't be using stock ECU anyways, or will go FE-DOHC...

I'm not an expert here but please explain to me how the VAF is holding up the show.
 

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Discussion Starter · #5 · (Edited)
it can be used as fuel tuning as well as replace the VAF... but thus far has there been something worth getting that can act like a SAFC? why spend major $ just to go standalone. This thing should be easier than a megasquirt to tune and can install in way less time.

Edit

it would also allow any BOV setup when used with a MAP sensor... for those who really want that feature... for me that is just a bonus, I'd rather MAP for accuracy and no VAF / MAF on your intake pipes
 

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Go back and change those links you gave him to the actual link and not a search query for VAF, otherwise they're going to turn into dead links.

magik8 said:
I'm not an expert here but please explain to me how the VAF is holding up the show.
It's not, there really isn't anything "restrictive" about the vaf at all. There is actually ample room inside and works quite well as is, even with much higher boost levels. I don't think the answer is a larger vaf at all, rather being able to get rid of it entirely.

Here are pictures:
http://www.mx6.com/forums/showthread.php?t=121810

Any other info that he needs I'd be glad to share as far as specs.
 

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Discussion Starter · #7 ·
Go back and change those links you gave him to the actual link and not a search query for VAF, otherwise they're going to turn into dead links
Done... though i doubt they would become dead links they werent search URL's they were just set to highlight the word VAF


Previous post edited
 

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Discussion Starter · #9 · (Edited)
I disagree... just add &highlight=vaf to the end of any http://www.mx6.com/forums/showthread.php?p=1338286 link and it works. change the word from VAF to whatever... all it does it do the highlight function... but whatever you want to believe.

try
http://www.mx6.com/forums/showthread.php?t=108025
then
http://www.mx6.com/forums/showthread.php?t=108025&highlight=maf


all i did was add that on the end... it never existed to expire

EDIT: If you copy a link of a search function with a search ID it will expire

so the link you copy must have search.php in the link for this
http://www.mx6.com/forums/search.php?searchid=355572

For instance shows my results of a search. and will expire
 

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magik8 said:
Don't really mean to be negative here, but is the "restrictive" VAF really what's holding up the F2T in terms of performance? Yeah the VAF isn't optimal, but I think there are other things holding up the F2T besides the airflow meter, i.e. the nature of the low-reving truck engine that is the F2, stock ECU capabilities, etc. I'm under the impression that if you really want balls-out performance with F2T you won't be using stock ECU anyways, or will go FE-DOHC...

I'm not an expert here but please explain to me how the VAF is holding up the show.
Tuning and having good hard pipes. BOV for those who want that
A real CAI system.....
Lots of benefits.
 

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magik8 said:
Don't really mean to be negative here, but is the "restrictive" VAF really what's holding up the F2T in terms of performance? Yeah the VAF isn't optimal, but I think there are other things holding up the F2T besides the airflow meter, i.e. the nature of the low-reving truck engine that is the F2, stock ECU capabilities, etc. I'm under the impression that if you really want balls-out performance with F2T you won't be using stock ECU anyways, or will go FE-DOHC...

I'm not an expert here but please explain to me how the VAF is holding up the show.

I agree with you 100%

If you want to get rid of the VAF, think megasquirt. 3 years ago we would have dreamed of something like megasquirt. Now that it has come along most people are too lazy to even educate themselves and take it seriously. What a joke!

If you are so serious about performance, get with the show here guys.
 

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Boltz, are you aware of the difference in signal output vs the Supra MkII VAF? I think when this guy find out how different the signal requirements are and how few people would acctually buy (not want to buy, I mean acctually BUY) it, he'll not want to bother.
 

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Discussion Starter · #13 ·
one can only wish they do go through with it... i guess you guys are all satisfied with your current stock setups or zombie chips... I personally don't care too much i dont have this car and am not stuck with a VAF or a disty. I am only interested because i work on Mr.JasonBH's car and know a whole lot about the car.

Same thing applies with my Mk3 supra motor... standalone or piggy back AFC... what do you choose... whatever will get you to your goals. and for most people here the goal is not 600hp from a F2T.

Did i forget to mention this MAFT pro has wideband input and data logging to a laptop...

I figured i would spark some thoughts on this and so far im seeing people would rather be stock. Those of you who venture into megasquirt are in for a lot of work... not that i wouldnt do it, but i have other plans which dont deal with a MX6
 

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HotRodMex said:
Boltz, are you aware of the difference in signal output vs the Supra MkII VAF? I think when this guy find out how different the signal requirements are and how few people would acctually buy (not want to buy, I mean acctually BUY) it, he'll not want to bother.
yes he has been made aware of atleast some of the signal outputs and he says the maft-pro can be programmed to suit. He is also working on a bmw vaf and spark timing has been added. Like boltz said this was intended to spread the word of the product. he is willinng to data log a car and hasn't asked for verified orders or deposites of anykind. if they can't deliver what will it cost us but if they do what do we stand to gain that should be the question. there is no way that this unit will fit everyones taste and if you are one of those people then don't post but if you are interested then lets get the ball rolling (your not obligated to buy)
 

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Discussion Starter · #15 ·
(your not obligated to buy)
By no means are you obligeted... they only want to log a car or VAF
 

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Just checking in

Hey guys,

I just wanted to stop by and join the discussion.

The Pro can run on these cars, we just need a little data. The VAF looks surprisingly like the Toyota one I have here. We will have that unit supported in the Pro in the next version of software.

The Pro can do a lot more than just act as a fuel controller (like an AFC). You can run it in "Translator Mode" and use a large GM MAF with it. Most guys go with the Speed Density mode though. It can track a wideband O2 sensor signal and maintain a desired AF Ratio at WOT. It also has boost control, and EGT logging.

At any rate, of course its not for everyone. But for those who need a device such as this, the Pro is a good answer.....

So for the moment, we need access to a VAF, or we can connect a Pro to a vehicle and gather data.

Thanks,

Bob
 

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Doesn't necessarily matter what it looks like. The RX7 VAF looks like the MX6 VAF, the difference is that they're different and the reason that products such as the SAFC will work on an RX7 but not an MX6. Just because something looks the same doesn't mean it'll operate the same, which you already know, I hope?

The SAFC operates on a 0~5v scale and the scale that the SAFC works in is linear and our VAF is logarithmic.
http://www.apexi-usa.com/support_faq.asp?id=10
Even works great with Toyota:
http://www.apexi-usa.com/pdfInstallation/16.pdf


Same thing with the Greddy emanage, works great for the RX7 and a couple other Mazda's but not for the MX6:

http://www.mohdparts.com/emanage/photos/emanage_photos/e-manage_engines.JPG

http://www.mohdparts.com/emanage/ultimate/manual/operation_manual/29.jpg

If you need any data on the VAF itself, let me know and I'll get it to you. I also have a vaf or two in my garage but am hesitant to send one off for something that very well won't ever materialize.

Good read on VAF's for everyone:
http://www.wellsmfgcorp.com/counterpoints/Counterpoint3_3.pdf

Lot's of people have tried, claimed they're doing it, claimed they figured it out, sold overpriced product:
http://www.mx6.com/forums/showthread.php?t=132663

And others are trying hard to figure something out:

http://www.mx6.com/forums/showthread.php?t=132663
http://www.mx6.com/forums/showthread.php?t=104920

The big problem is that even if you figure it out, very few people will buy.



As far as a speed density vaf to map conversion, I'd love to see it.
 
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