I heard somewhere that you can hook up the blue wire from the apexi safc to your o2 sensor and it will work under the air flow% on the converter... is this true and do youjust spice the o2 wire or what?

 

Ghetto A/F ratio guage
But I thought it only gives a voltage reading on the sensor check screen, I'm going to do it this weekend and will let you know.

 

voltage reading is better than the blinking red,yellow and green LEDs.

 

Yes but according to Apexi, "there's already a load on the O2 sensor wire to make it less accurate and don't recommend you using the blue wire mod" then they go on to say but "our Auto Timer has a built in voltage reader for the O2 sensor that can theoritically be used as an A/F ratio reader".
But I think Apexi is just trying not to undercut their Auto timer sales by downplaying the AFCs ability to read the O2 voltage

 

i just wish you could use the blue wire mod for the VAFC also, but the wire is used to help control vtec.

oh well...good luck.

PauL

 

so what voltage readings would you be looking for??

 

the blue wire is for air flow.... so you would think the reading would show up there.... i guess ill just have to splice and try it.....

 

ok well i spliced intot the green wire commin out of the 02 sensor and pluged it with the blue wire comin out the safc and i didnt get ---- out the air flow and i couldnt find it on the voltage reading so if anyone gets it to work let me know

 

It's in sensor check, under the etc menu. The #2 reading is the O2 voltage.

.89+ is rich. You wanna tune to around .90 -> .92 on a turbo Honda. I was running around .89 -> .91. Like .95 is too rich. -TheDropShop