What is the OD of the factory exhaust on my car and what is the length of the intermediate resonator located after the catalytic converters?

 

Welcome to the forum Kennyandlow,

I've moved your question from General Tech Help to XF/XFR forum and deleted the duplicate from XK/XKR forum. This is the place to post technical questions about your model.

Please follow this link New Member Area - Intro a MUST - Jaguar Forums - Jaguar Enthusiasts Forum to the New Member Area - Intro a MUST forum and post some information about yourself and your vehicle for all members to see. In return you'll get a proper welcome and some useful advice about posting to the forum.

Graham