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BACK
RX7
AFM
There
seems to be some mystery surrounding the RX7 AFM. This AFM has been
used as a cheap replacement for the stock 3SGTE AFM (US market). We
will cover here the differences, and lay to rest (hopefully) any mystery
regarding this AFM.
SPECS:
87-88
MAZDA RX7 (NON TURBO) Mass Air Sensor NipponDenso
Part #17100-3250 PERFORMANCE:
This AFM is roughly close to the stock AFM.
While some have claimed a better feel, no performance figures have been
produced.
GAINS: No
gains have been reported, other than "it feels nice". In
an otherwise stock car, top end would be improved slightly. INSTALLATION: The
AFM is virtually identical to the original on the outside. Your
stock air box or aftermarket intake should bolt on. TUNING:
The response may be different on the RX7 afm.
We will show later how to adjust this. TESTS: Here
are the spec outputs from the MAZDA AFM vs the TOYOTA AFM. You can
see that they are virtually identical. We will report more as we
find it.
| |
RX7 |
3SGTE |
| Voltages: |
|
|
| VC - E2 |
4.5-5.5V |
4-6V |
| VS - E2
(Flapper closed) |
4V |
4-5V |
| VS - E2
(Flapper full open) |
|
0.02-0.5V |
| VS - E2
(Idling) |
2.5-3.5V |
2-4V |
| THA - E2
(at 68degress F) |
2-3V |
1-3V |
| Resistance: |
|
|
| VS - E2
(Flapper closed) |
50-500 |
200-600 |
| VS - E2
(Flapper full open) |
50-500 |
20-1200 |
| THA - E2
(at 68 degrees F) |
2,000-3,000 |
2,000-3,000 |
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