need help, need help 93 gsx Options

[doayamaha]

ok my friend has a 93 gsx and it is upgraded bigger turbo, fmic, s-afc. the other day we were doing some cleaning up of wires on the inside of the car afc wiring and removed indiglo guages. but when we got done doing that we took it for a ride to make shure everything was working correctly. every thing was fine then we decided to take it back to the shop and put it on the lift to check everything under it. when we took it back off the lift went to leave the shop and something was wrong. kept on creeping up to being rich and idled high when you would take off just as you start to get into boost it starts stumbling. but once it gets boost built up it takes of like nothing is wrong untill you stop and it does the same thing. any help i could get would be very helpfull.

[awd4kicks]

I've never wired an AFC, but is there a chance that there is a memory wire that needs to be attached to power at all times. I'm wondering if your settings were lost after you turned the car off the first time, causing the AFC to revert to it's standard settings. If it is rich it would take more air (boost) to make it run better. Stock AFC settings are probably rich...but these are all just guesses on my part.

[SCCA Stang]

Not sure about that kicks... when I bought my SAFC II, the settings that the previous EVO owner had put in were all still there when I installed mine in the GSX.

[doayamaha]

What you will need:
1) Phillips head screwdriver
2) Wire stripper/cutter
Unplugging the connectors to the ECU
1) Remove the passenger rocker panel cover and kick panel, and pull back the carpet. (for a DSM, the ECU is located behind the radio)
2) Unplug the connectors from the ECU behind the glovebox. (This will probably be easier if you open the glovebox past its catches)
NOTE: All wiring instructions are referrenced as looking directly at the yellow connectors.

Connecting the wires
1) Power Wire: Connect the Red wire of the AFC harness to the Red wire with Black bands corresponding to the connector hole as shown above (bottom row, 2nd from right).
2) Ground Wire: 1: Connect the Brown wire of the AFC harness to the Black wire with Orange bands corresponding to the connector hole as shown above (bottom row, furthest on the right).
3) Ground Wire 2: Connect the Black wire of the AFC harness to the same Black wire with Orange bands as you did the Brown wire. Be sure to connect the Brown wire closer to the ECU/connector than the Black wire.
Failure to do so may result in improper product operation and engine damage.
Wiring the AFC into the 24 pin connector
1) RPM Wire: Connect the Green wire of the AFC harness to the Black wire corresponding to the connector hole as shown above (bottom row, 4th from left).
2) Throttle Signal Wire: Connect the Gray wire of the AFC harness to the Green wire with a white stripe, corresponding to the connector hole as shown above (bottom row, 6th from left).
3) Air Flow Signal: Cut the Green wire with a blue stripe and Orange bands, corresponding to the connector hole as shown above (top row 3rd from left). This is the Air Flow signal wire. The AFC will intercept this wire and allow you to adjust the MAS signal to the ECU so leave enough wire from the connector so you can splice in.
4) AFC Connections: Connect the Orange wire (input to the AFC) of the AFC harness to the wire you cut from the 24 Pin connector. Connect the Pink wire (output from the AFC) of the AFC harness to the part of the wire still on the connector.
5) (OPTIONAL) Sensor 2 - Oxygen Sensor: Connect the Blue wire of the AFC harness to the White wire with Orange bands corresponding to the connector hole as shown above [blue circle] (top row, 4th connector from the right). This is the Oxygen sensor signal to the ECU. You can view this signal in the "etc." menu, under "Sensor chk".
6) Setup: Car Type is 4 cylinder and progressive throttle. Air flow type is Karman Vortex.
Written by JOHN LAMBERT