i am hooking up my air/fuel gauge and i need to know what pin/wire on the ECU i hook into so the gauge can read the air/fuel. please reply back ASAP THANKS

oh yeah i have an 90 Si Hatch

 

I dont believe you searched. Im sure you can find ecu pinouts with the search. I forget what the exact pin is but its the white wire on the bottom of the 3 plugs if I remember correctly. Its your O2 sensor wire. Then youll have one nice light show with that gauge.

 

Either splice directly to the white wire on the o2 sensor on the header..(Kind of rigged but it works..)

or splice into c16 on the ecu for a clean install..

 

and take your readings with the a/f guage with a grain of salt cause since you dont have a wb02 it wont be that accurate.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GoFastMotorSports &raquo;</TD></TR><TR><TD CLASS="quote">and take your readings with the a/f guage with a grain of salt cause since you dont have a wb02 it wont be that accurate.</TD></TR></TABLE>

yeah my G-tech meter jumps around quite abit