Removing the Secondary Catalytic Converters from an Aston Martin DB9

How to remove the Secondary Catalytic Converters from a 2005 Aston Martin DB9. I was doing this to install a set of Seconday CAT Delete Pipes as part of some bolt on performance upgrades I was testing. More details can be found on my companion blog at https://aston1936.com/2020/03/14/remo.... Note: It may not be legal to modify your emission system, so be sure to check and comply with all your local requirements. For those of you concerned for me and the local laws, please relax. I am testing how these things work. I'll be restoring my car back to its OEM goodness afterwards and using the upgrades at the AMOC track days.