Ok I have given up with the AF guage to ECU idea, where should I drill the fire wall or is there an existing hole I could use? Thank you.

- M

 

Cant find the wire for the primary o2 sensor? I know its kind of confusing but the wire is there. I woulden't sugest drilling for one wire just run it through one of the rubber plugs or through the firewall with something that already goes through it like the throttle cable.