[AllHailKingVolvo]

Super helpful stuff, thankyou!!!

The lambda on my car screws into the cat, as per the first Klarius diagram. Those cat delete pipe sections with the Lambda boss are a brilliant idea! I’ll order one of those. I’ve replaced the back box as the baffles had disintegrated, but it’s blowing a little at the joint, as the “up and over” pipe in front of it was fairly rusty at the joint. I cleaned it up as much as poss but it still isn’t a very good joint, so I’m thinking a new up and over plus centre box are in order, and I’ll decat in the process.