Hello.
I just bought a used carbon fiber two brothers standard mount exhaust on ebay and the pipe doesn't have a hole for the O2 sensor. I have a california 02 f4i.

Is there anything I can do? Do i need to have the O2 sensor hooked up?

warning to others, two brothers didn't change the part number when they added the O2 sensor hole to their pipes.

 

A simple fix to keep the O2 sensor is to take the exhaust to someone that can weld a nut in place to re-mount the O2 sensor. I've read this a couple of times on here. I believe 2bros have a plug that will eliminate the need for the O2 sensor. There isn't a big following on the need for the sensor. All it does is lean out your fuel to air ratio if you remain at a constant RPM for a period of time. So you don't gain or loose performance with or with out it.

 

yea mang you only lose MPG...and LOTS at that matter! ask me...i gots the eliminator!