#45012, "RE: 02 sensor on the apexi turbo timer" In response to In response to 5
"ohh I was under the impression it determined the A/F by reading whatever is delivered from the harness"
thats true but you got to hook it up completly dude. if you dont hook up the a/f wires it wont read the a/f mixture. Michael 99gs HRC Stage 2 @12psi Stage 3 process begins gathering parts for rebuild