So the guy who previously owned the rx7 which is now mine had disconnected the O2 sensor when I discovered this a few days ago I was talking to him about it and he said that it helps it from running too rich and you get more power. I thought the O2 sensor helped keep the A/F ratio in check and wouldn't removing it or disconnecting the O2 sensor cause the computer to go into some sort of limp mode for it or possibly make the A/F too rich. Any input would be helpful I'm trying to decide whether to reconnect it or not, but I want to make sure of the benefits or problems. Thanks in advance. Oh by the way its a 88 N/A.

I dont know what it does exactly but i disconnected mine a while back. It didnt really have any more noticible power, but after a while, while i was cruising on the interstate, my cel came on. I stopped, plugged the o2 back in and the cel went off.

Since its used to help with the A/F ratio I would think that I would be consuming more or less fuel depending on what the computer does when its not receiving any signal.

dude...

o2 helps gas mileage

it wont give you power if you disconnect it....

o2 gives you closed loop

Thats exactly what I thought but somehow the previous owner got this other idea in his head.

yeah.... i guess it happens... sometimes when i get high, i do weird things too!!!