o2 censor

i put a header on my mazda about 3 years ago and in that header thier was a hole for the 02censor so what i did was cut the o2censor out and just pluged that hole with a bolt now was that bad should i put my o2censor back or is it fine without one i have a weber carb if that helps also thanks

the O2 sensor is only for the stock feedback carb or the stock fuel injection. If you have a weber, you dont need it.

thanks russ-d

...unless you want to keep it for tuning purposes such as hooking it up to an Air/Fuel meter.