SAFC DIY?

[Evil Z31]

I saw that some people were requesting it. Is it really needed around here?
The SAFC is good for tuning the gap between the stock ECU/injector limit of ~240whp up to the ~320whp MAF limit. After that, you'll need a bigger MAF or bypass, and the SAFC will no longer be useful. But the SAFC is super cheap and takes less than an hour for any noob to install once the DIY is done.

I just bought an SAFC for $85, and can do a quick writeup with pics if you want. I'm a newb to the Z31 ECU though, so if any of you have a pinout anywhere, then let me know.

[vagabond]

Subject: 84 NA ECCS Pinout


Subject: 84 normally aspirated computer pin out


84NA ECCS Connector

pin/wire color/destination

1 X
2 L..........FICD/Idle up Solonoid
3 L..........Ign Coil, Pwr Trans
4 L/W.....EGR Control Solenoid
5 G/B......Pwr Trans
6 R..........EFI Relay
7 X
8 G/Y.....CAS (sheilded)
9 Y..........Ig Switch, G/Y to Pressure Reg Con Module
10 X
11 G.......Unused Connector
12 R/W. AFM
13 X
14 X
15 Y........Fuel Temp Sensor
16 B........Air Reg
17 G/B....CAS (sheilded)
18 P/L.....TVS

21 X
22 Y/G.....A/C System, Headlamp Switch
23 Y/G.....Pres Reg Con Modulator, CHTS
24 B.........Oxygen Sensor (sheilded)
25 L/G......TVS
26 B..........CHTS, AFM
27 B/W.....Pin #35
28 B..........Pin #36
29 X
30 Y/G.....AFM
31 B.........AFM (sheilded)
32 X
33 X
34 G/W...Ig Coil, 15A Fuse in Fuse Block
35 B/W...AFM (sheilded), FICD/Idle up, EGR Con Soleniod, CAS (sheilded), L/R to Pres Con Reg Solenoid, G to Pres Reg Con Mod
36 B........Bonding Wire for Sheilding, CAS (sheilded), Pressure Reg Con Mod, Unused Connector


101 G.......Injector #1
102 G/B...Injector #3
103 G/L...Injector #5
104 G/Y...Injector #2
105 G/R...Injector #4
106 G/W..Injector #6
107 B.......Ground, FICD Soleniod Valve; Pins #109, 112, 113
108 B.......Fuel Pump Relay (sheilded), Fuel Pump (sheilded)
109 B.......Same as #107
110 X
111 X
112 B.......Same as #107
113 B.......Same as #107
114 R.......Fusible Link, Injectors
115 Y.......Pres Reg Con Modulator, Oxygen Sensor

[vagabond]

84 turbo computer pin out


84T ECCS Connector

pin/wire color/destination

1 X
2 L..........AAC
3 L..........Ign Coil, Pwr Trans
4 L/W.....EGR Control Solenoid
5 G/B......Pwr Trans
6 R..........EFI Relay
7 X
8 G/Y.....CAS (sheilded)
9 Y..........Ig Switch
10 X
11 G.......Unused Connector
12 R/W. AFM
13 X
14 X
15 Y........Fuel Temp Sensor
16 B........Air Reg
17 G/B....CAS (sheilded)
18 P/L.....TVS

21 W........Detonation Sensor (sheilded)
22 Y/G.....A/C Relay, Headlamp Switch
23 Y/G.....Pres Reg Con Modulator, CHTS
24 B.........Oxygen Sensor (sheilded)
25 L/G.....TVS
26 B..........CHTS, AFM
27 B/W.....Pin #35
28 B..........Pin #36
29 PU.......Combo Meter (Vehicle Speed Sensor)
30 Y/G.....AFM
31 B.........AFM (sheilded)
32 X
33 X
34 G/W...Ig Coil, 15A Fuse in Fuse Block
35 B/W...AFM (sheilded), AAC, EGR Con Soleniod, CAS (sheilded)
36 B........Bonding Wire for Sheilding, CAS (sheilded)


101 G.......Injector #1
102 G/B...Injector #2
103 G/L...Injector #3
104 G/Y...Injector #4
105 G/R...Injector #5
106 G/W..Injector #6
107 B.......Ground, FICD Soleniod Valve; Pins #109, 112, 113
108 B.......Fuel Pump Relay (sheilded), Fuel Pump (sheilded)
109 B.......Same as #107
110 X
111 X
112 B.......Same as #107
113 B.......Same as #107
114 R.......Fusible Link, Injectors
115 Y.......Pres Reg Con Modulator, Oxygen Sensor

[vagabond]

86 computer pin out

86 ECCS Connector

pin/wire color/destination

1 R..........-not used-
2 L..........AAC valve(T), Idle-up solenoid(NA)
3 L..........Ign Coil, Pwr Trans
4 L/W........EGR Control Solenoid
5 G/B........Pwr Transistor
6 R..........EFI Relay
7 SB.........To Combination Meter (digital type)
8 G/Y........CAS (shielded)
9 Y..........Ign Switch
10 BR........Neutral Switch(M) or Inhibitor Switch(A)
11 G.........-not used-
12 R/W.. ....AFM
13 -no pin-
14 Y/G.......AIV Solenoid
15 Y.........Fuel Temp Sensor
16 B.........Air Reg
17 G/B.......CAS (shielded)
18 P/L.......Throttle Valve Switch

21 W.........Detonation Sensor (shielded) (T)
22 Y/G.......to A/C system(NA),pwr steering sw (NA),
.....FICD solenoid valve(T),AC compressor relay(T)
23 Y/G.......CHTS
24 B.........Oxygen Sensor (shielded)
25 L/G.......Throttle Valve Switch
26 B.........CHTS, AFM
27 B/W.......Pin #35
28 B.........Pin #36
29 PU........Combo Meter (Vehicle Speed Sensor)(T)
30 Y/G.......AFM
31 B.........AFM (shielded)
32 -no pin-
33 -no pin-
34 G/W.......Ign Coil, 15A Fuse in Fuse Block
35 B/W.......Pressure Reg. Control valve, EAI solenoid, EFI Relay, EGR control ...solenoid, CAS (shielded), Idle-up solenoid (NA), AAC valve (T), AFM
36 B.........Bonding Wire for Shielding, CAS (shielded), CAS, body ground


101 G.......Injector #1
102 G/B.....Injector #2(T) Injector #3 (NA)
103 G/L.....Injector #3(T), Injector #5 (NA)
104 G/Y.....Injector #4(T), Injector #2 (NA)
105 G/R.....Injector #5(T), Injector #4 (NA)
106 G/W.....Injector #6
107 B.......FICD Solenoid Valve(T & NA), Pins #109, 112, 113, body ground
108 B.......Fuel Pump Relay (shielded), Fuel Pump (shielded)
109 B.......Same as #107
110 -no pin-
111 -no pin-
112 B.......Same as #107
113 B.......Same as #107
114 R.......Fusible Link, Injectors 12+ source
115 -no pin-

Notes:
1 most control voltages seem to be negative such as fuel pump, injectors and the Ignition coil. Because of this, a good ground is important!
2 The injector wiring difference between T’s and NA’s might be a contributing cause to hesitation’s after the injector campaign. There is not much of a difference between the T and NA’s wiring, most notably the difference in wiring of the FICD and AAC valve on the T’s and FICD and Idle-up solenoid on the NA’s.
3 not many differences between the 84 and 86, notably the lack of the fuel pressure regulator control module (pin #115). Also noted are the lack of the headlight switch (pin #22) which probably effects the idle speed and the addition of the AIV (air injection valve) on the 86 models.

[vagabond]

Feel free too search next time.

z31.com