Got a question for all you gurus...I have an 02 WRX that I am running catless, I want to install an air/fuel gauge, but am not sure where to hook it up, I did a search and someone said to use B17 on the ECU to get an 02 signal, but I have done the cat cel fix by splicing in a resistor in my rear 02 sensor harness, will that affect the gauges function?

Thanks,
Kevin

 

You need a real wideband kit that uses its own sensor like I have in my car . I can post pictures if you would like. I'm not sure how you would hook a 0v-1v a/f ratio gauge to the factory WRX front sensor. Since you have a clamp on the rear sensor, you can't use it, even if your car is catless.