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Old 04-03-2012, 05:21 PM   #1
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Default AFM Compatibility questions

I found an AFM from a Mazda 929 at a local junkyard and snatched it up for next to nothing. The Mazda sticker is marked as a J9. The AFM is identical to the RX7 meter in appearance, however the internal circuit board is clearly different as well as the resistances.

I've been doing research on the various AFM's and this one seems to be very over looked or forgotten. I'm aware some meters run from 1-3v and other run from 3-5v. I'm not sure which voltage range this meter runs at nor if its possible to convert it to work with a stockish 1.6. If this unit isnt plug and play or modifiable, i've debated just swapping the guts from the Miata AFM trying to meter AFR's and adjust it until it looks right.

If anyone has gotten one of these or something similar to work properly. I could use some help.
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Old 04-03-2012, 10:55 PM   #2
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I don't have an answer for you, but why exactly would you want to use this? It'd be way better to just get some sort of fuel management system installed in your car, and if you go high enough, eliminate the AFM all together.
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Old 04-03-2012, 11:04 PM   #3
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Quote:
Originally Posted by dustinb View Post
I don't have an answer for you, but why exactly would you want to use this? It'd be way better to just get some sort of fuel management system installed in your car, and if you go high enough, eliminate the AFM all together.
Mostly just because of the of the nearly comical shoe-sting budget this car is being built on. I've considered running a series of potentiometers in place of the integrated resistors, just so I could get a Frankensteinesque adjustable fuel map.

I know its no where as nice,reliable, or practical as a megasquirt or any other engine management for that matter but its something to do instead of twiddling my thumbs.
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