Im trying to hook up a Air/fuel guage on a 03 evo 8 and I have 4 wires and does anyone know what wire is the high o2 sensor signal

4 wires 2-black 1-blue 1-white

 

This might help
http://www.roadraceengineering.com/e...-ecuwiring.htm

 

throw it in the trash and buy a wideband....

 

+1

 

+2

 

+3

 

+4

 

+5 , about as much use as an ashtray on a bike.

 

+6

 

+7 I still don't understand why people buy narrowbands.

 

get the xd-16 from innovative motorsports.......really simple to hook up and to calibrate. did it all in my driveway using just a wrench and screwdriver (except the bung work)

narrowbands are worthless, it will just bounce all over the place.

 

people still use narrowbands?

 

apparently.............they shouldnt even sell em anymore