a/f ratio

[mista_sup]

is there another place that i can tap into the o2 sensor besides the blue wire on the sensor itself?:1zhelp: :1zhelp:

 

[JAB89]

Ox1 on the Diagnostic Connector.

 

[MDCmotorsports]

If you're trying to tune with a narrow band O2 you're asking for trouble....

 

[mista_sup]

u mean the connector right by the baterie..

Ox1 on the Diagnostic Connector.

 

[mista_sup]

got the stock one in. people kept telling me to tap into the blue wire on the sensor but it sits in the middle of no where and i can't hide the wire..

u mean the connector right by the baterie..

 

[james_9876]

It may take a little more wire, but run it along the O2 wires until it comes back up the wiring harness to the firewall.

Like I said it'll take some wire but it can be done.

 

[mista_sup]

thats true but if that the only wire then thats what i will do.

good lookin!!

It may take a little more wire, but run it along the O2 wires until it comes back up the wiring harness to the firewall.

Like I said it'll take some wire but it can be done.

 

[veedubin]

thats true but if that the only wire then thats what i will do.

good lookin!!

or go to the ecu itself, get the conector diagram, then tap into that harness about 6" back from the conector, and no " splice tap" thingies... solder and shrink wrap

 

[JAB89]

u mean the connector right by the baterie..

Yes, actually the Diagnostic block is by the fuse block which is next to the battery. You can plug a paper clip into "Ox1" and try it before you install it permanently. According to the wiring diagram the wire is white (can't see mine it's covered up now). I ended up soldering in just behind the connector. I also used a shielded cable (like the wiring harness) in an attempt to keep the signal as clean as possible. And grounded the shield at the meter end only.

Wiring diagram:
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=D&P=33
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=D&P=34