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Dual Mass Air Flow
Reason
|
the stock mass air flow meter poses a significant restriction in the air flow as one approaches and exceeds 500rwhp | |
|
the restriction is apparent from these pics | |
|
parallel MAF's would allow more than enough intake air |
Physical Design
| intake -> Y pipe -> 2 MAF's in parallel -> Y pipe -> turbo | |
| use the A'PEXi S-AFC or Greddy e-Manage to combine air readings (and compensate for larger than stock (550cc) injector size if desired) (Note the e-Manage does a superior injector size compensation to the S-AFC) | |
pic of design (by Mohd) | |
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Wiring
| Harness M1 (to MAF) |
| Wire number | 93.5 - 95 Colors | 96-98 Colors | Usage |
| 1 | black w/ red stripe | black w/ red stripe | +B (power; 9 - 14V) |
| 2 | yellow w/ red stripe | yellow w/ red stripe | VG (O2) |
| 3 | pink w/ blue stripe | green w/ black stripe | THA (temp) |
| 4 | brown w/ black stripe | white w/ black stripe | E2 |
| 5 | brown | brown | E2G (ground) |
| tap into power and ground and connect them to the 2nd MAF | |
| wire from 2nd MAF O2 value goes back to S-AFC blue wire (see Nissan 300ZX instructions) |
S-AFC settings
| set to combine O2 sensor signals from each MAF by adding | |||||||
if installing 720cc injectors set the low and high throttle
baseline settings to -24 percent
| |||||||
if installing 850cc injectors average the 2 MAFs (instead
of adding) and set the low and high throttle baseline settings to +29 percent
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Hit Count (since 7/20/2002:)
© moreboost.org 2002