Hey so basically car was throwing p0031 I have long tube headers I noticed the extension was broken so I bought new ones they work but as soon as I clip it so the 02 sensor cut just shuts off and throws p0643 so I checked grounds all were fine connector to the 02 sensor seems fine nothing out the ordinary I even got a brand new 02 sensor and a used one from a friend any other ideas on what to check as soon as I plug it in goes to limp mode and shuts off had the headers for a month and a half no problems till the wire got burnt bought new extenders and new 02 sensor