Ok I have a new takeoff M8 touring header where the 12MM NB O2 bungs have been tapped to 18MM to accept the Wideband O2 sensors. The cat is still in place you can remove it if you like. What makes this different is the 18MM ports which will allow you to use a stock header with a Target tune/T Max etc that require 18MM O2 sensors.

Asking $50 + $30 shipping.

Does not include crossover pipe.

If you have ever wanted to go to T Max or another Wide Band tuner and did not want to pay $500+ for aftermarket header this may be a good option.

 

Don’t know what year yours is, but my 2022 stock tapped for 18mm did not work with wide band sensors. The placement was wrong. Just my experience.

 

How so? Enquiring minds want to know…

TIA

 

Well, do to the location of the O2 bung the longer wideband sensor would contact the transmission cover. The front sensor (if I remember correctly contacted the engine near the base of the front cylinder. This was with the Tmax O2 sensors.

 

You're likely correct based on your experience. I have never tried them.