New AFM killer
From German miata forum
mx-5.net - die Diskussionsforen von www.mx-5.de - Anzeige des Themas #51372 - Luftmassenmessung im 1.6er NA - Interesse? I's a simple project to delete the old flow meter with a new MAF |
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2 Attachment(s)
The box with the connectors
https://www.miataturbo.net/attachmen...ine=1420534734 https://www.miataturbo.net/attachmen...ine=1420534734 |
2 Attachment(s)
The new MAF (from wv golf IV)
https://www.miataturbo.net/attachmen...ine=1420534858 On the 1.8 air box https://www.miataturbo.net/attachmen...ine=1420534858 |
1 Attachment(s)
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1 Attachment(s)
https://www.miataturbo.net/attachmen...ine=1420535106
A project really nice, if you want to infomation contact MX5gn in german forum |
Looks nice. I cannot read German, is he selling them?
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What is the point? Install MS, use MAP, PROFIT?
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Originally Posted by shuiend
(Post 1194091)
What is the point? Install MS, use MAP, PROFIT?
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Originally Posted by shuiend
(Post 1194091)
What is the point? Install MS, use MAP, PROFIT?
A rebuilt AFM is close to $300 and not reliable. Even in the turbo world, there are some of us that prefer to keep it simple, albeit we don't get to tweak and tune to maximum power. |
Yes is for sale, little price.
I bought one a few days ago, has not yet arrived. Utilities? A original engine "breathe" better, gain of 2-3 hp at high revs (as when using the afm of rx7). More air flow ... more power :) |
Originally Posted by Vitruvio74
(Post 1194107)
Yes is for sale, little price.
I bought one a few days ago, has not yet arrived. Utilities? A original engine "breathe" better, gain of 2-3 hp at high revs (as when using the afm of rx7). More air flow ... more power :) |
Does anyone know if the 1.8 MAF is an analog or a frequency based MAF?
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Originally Posted by olderguy
(Post 1194225)
What kind of pricing?
around 50 euro + shipmet, is very low cost :) |
Most user of the german mx5 board don't want megasquirt because they think it's not worth it on a N/A application. They experiment a lot with modifications like this one because it's relatively easy and doesn't involve a lot of tuning. Also you need to have it inspected by the TUEV to get it street legal and while a few companies work together with the TUEV engineers to be able to certify a ms most people consider them illegal and don't want to bother with it. The funny part is, while the AFM modification may be not too flashy in a stock looking engine bay it's illegal too because you changed emission relevant parts :D
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Originally Posted by cyotani
(Post 1194227)
Does anyone know if the 1.8 MAF is an analog or a frequency based MAF?
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Originally Posted by Joe Perez
(Post 1194569)
The MAF sensors in all '94 - '05 Miatas have a 0-5v analog output.
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Originally Posted by olderguy
(Post 1194574)
Joe, have you looked at the circuit posted? Thoughts?
Not sure what the cute little arrangement at pins 20 & 21 is about, but I assume it's there for a reason. Aside from that, nothing much else to it. I'm a little surprised that the CPU isn't taking in an IAT signal, as I would have thought that it would be helpful in correcting from mass to volume, but then I admit that when I implemented this same concept in software back around '06 or so with the Greddu EMU, I didn't use IAT either (admittedly, I was using MAP/RPM rather than MAF as my input.) I'm sure it'll work just fine, and you're right in that it's probably time for a circuit like this to exist, as working VAF sensors are going to start getting hard to find. |
UPDATE UPDATE UPDATE
I bought one to try. Very professionally done. Works great.
Much more economical than replacing a defective AFM and restricts the airflow less on an 89~93 NA or Turbo where the AFM hasn't been eliminated. Using an early 1.8 air box, it almost looks stock. |
Link?
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