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-   -   t2 maf interchange (https://www.rx7club.com/2nd-generation-specific-1986-1992-17/t2-maf-interchange-972108/)

sodrifter 10-04-11 10:09 PM

t2 maf interchange
 
do any other vehicles maf sensor's interchange with the rx7? i noticed that late 80s toyota pickups have the same looking maf.:scratch:

misterstyx69 10-04-11 10:21 PM

depends..some Supras can use the N/A AFM.Some dude bought one for that specific purpose.
if you have a S5 you may be able to change to a Cosmo AFM.(see ARGHX's thread, I think)

n.taluckder 10-05-11 06:50 PM

theres a member i think k-tune with an 88 10th anne who runs a cosmo afm on a s4

tuscanidream 10-05-11 09:35 PM


Originally Posted by sodrifter (Post 10812250)
do any other vehicles maf sensor's interchange with the rx7? i noticed that late 80s toyota pickups have the same looking maf.:scratch:


Originally Posted by n.taluckder (Post 10813272)
theres a member i think k-tune with an 88 10th anne who runs a cosmo afm on a s4

S4's have AFM's. S5's have MAF's.

Which sensor are we talking about here. :scratch:

Spirit-RE 10-05-11 10:42 PM

Why?

Get the maf/afm that is right for your car. They sell for like $50.

Not worth the potential issues.
Don't be that guy.

misterstyx69 10-05-11 11:48 PM


Originally Posted by n.taluckder (Post 10813272)
theres a member i think k-tune with an 88 10th anne who runs a cosmo afm on a s4

ya,sorry it was K-Tune. Not ArghX.
Those Guys are on the Rtek Forum and I keep getting them mixed up,as they now alot of stuff!

sharingan 19 10-05-11 11:57 PM


Originally Posted by tuscanidream (Post 10813478)
S4's have AFM's. S5's have MAF's.

Which sensor are we talking about here. :scratch:

No.
S4's have afm's.
S5's have afm's.
No rx7 ever came w/ a maf.....unfortunately

Also, the cosmo AFM (n390) will not idle (w/ 550 prairies at least) on an s4 ecu , or an rtek for that matter due to the fact that there is no idle adjustment capability. It will run , but it is too lean at idler and stalls.

tuscanidream 10-06-11 12:16 AM


Originally Posted by sharingan 19 (Post 10813616)
No.
S4's have afm's.
S5's have afm's.
No rx7 ever came w/ a maf.....unfortunately

Now I'm confused.

Here's what I found under Airflow Meter Sensor on wikiwikipedia:

The vane (flap) type air flow meters (Bosch L-Jetronic and early Motronic EFI systems or Hitachi) actually measure air volume, whereas the later "hot wire" and "hot film" air mass meters measure speed of air flow.
So isn't the "hot wire" a mass airflow sensor and not an airflow meter?

S4
http://i879.photobucket.com/albums/a...h_6a97019d.jpg

S5
http://i879.photobucket.com/albums/a...h_7071c321.jpg

sharingan 19 10-06-11 12:38 AM

And there isn't a "hot wire" in either one of those units. Don't let the shape fool you, the s5 is merely a cone-style AFM as opposed to a flapper door style.

tuscanidream 10-06-11 01:04 AM


Originally Posted by sharingan 19 (Post 10813648)
And there isn't a "hot wire" in either one of those units. Don't let the shape fool you, the s5 is merely a cone-style AFM as opposed to a flapper door style.

Gotcha. How does it work?

sharingan 19 10-06-11 01:17 AM

Arghx has a thread on here w/ airflow #s between the different AFMs, it also has cutaway views of their operation and technical papers on the subject. I would link it, but I'm on my phone and that's too much work.

Short story: there is a cone in a tube, that cone has a spring (of a known resistance) behind it such that the further the cone is pushed into the tube, the greater the volume of air is registered. ....far from a maf, but still better than the s4 crap meter.

nycgps 10-06-11 01:27 AM

Just look at the throttle cable, and think of the cable is the "incoming air/force", it pull(push) the clip that's attached to a spring.

the AFM works almost the same way.

tuscanidream 10-06-11 05:28 AM

Thanks for the explanation! ...and sorry for the mis-information I gave.

sodrifter 10-06-11 06:33 PM

in not gonna be that guy to use the wrong one. i was just curious after seeing my buddys toyota afm

sharingan 19 10-06-11 06:44 PM

The FC afm is unfortunately the crem de la crem, of antiquated air metering technology.

Lots of other cars can see gains by swapping in an fc afm (supra, mr2, miata etc) but most any vehicle w/ real performance potential had already ditched the afm by the time the fc came along.


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