NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   2nd Generation Specific (https://www.nopistons.com/2nd-generation-specific-17/)
-   -   New Afms Or Mafs Or Whatever (https://www.nopistons.com/2nd-generation-specific-17/new-afms-mafs-whatever-38479/)

Dramon_Killer 05-07-2004 02:28 PM

I was wondering if any other AFMs or even MAF sensors are out there that would work with the 2nd gen. Like if you took it and re-pinned it would it have the same connectors and would it be compatible or no?

roadkill669 05-08-2004 07:02 PM

As long as the volatge range is the same, any one would work as long as you re-pin it the correct way. Usually you have a 12V+, a 5V+ ref., a V-, and I think there are 2 signals, one being a completely shut, and one being a variable range.



If the range is different, you would need to change that by amplifiying the signal, or weakening it. I cant remember the range on the stock one. Last time I played with it was when I made my MAP to AFM converter. Its a decreasing signal (the farther the flap opens, the voltage decreases). I believe the range would be 2 to .5 or something like that. Its really easy to find out the voltage when you have a SAFC.

j9fd3s 05-08-2004 07:40 PM

the v6 probes have a larger one.



there is a 2 pin temp sensor, then a 5v power, ground and then the signal.



the range on an fc is 5v-0v, 5 being closed, idle is like 2.25ish and fully open is sometimes negative

Dramon_Killer 05-09-2004 03:55 PM

Would any MAF sensors work? Or would those just straight up not be compatible with our stock ECU's?

j9fd3s 05-09-2004 05:35 PM

the v6 probe/93-97 v6 626 ones work, same plug and pinout. also the 20b cosmo, but its prolly to rare to use?

Dramon_Killer 05-09-2004 09:41 PM

Cool, i'll try to get one of those sometime and i can test it out next time i hit the dyno!!


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