[cliff]

Is the Oxygen sensor on the 88 951 a single wire or 4 wire. A company called TWM has AFR meter (I don't think Pelican sells one) that is only $100 (A-10 model). Cheaper than others and is for cars in which the o2 sensor is already installed. Has anyone used this device....opinions. Also if the o2 sensor is single wire, do you just splice into the existing wire while maintaining the connection with the stock engine computer ?

Thanks