
The exhaust replacement was a big success - she's much quieter and there's no fumes coming into the cabin now!
It was a surprisingly easy job - only one clamp attached the remains of the original exhaust to the car, and after a quick tap to release it from the turbo, it came free and slid out of the mounts.
The new exhaust came from eBay of all places

Here's the turbo outlet after the old system was removed. I cleaned it with a scourer to prepare it for exhaust paste.
Looks like I have a power steering leak at the rack, my next job ;)

The old system had been previously patched up (badly). It was blowing at the flexi, before, and after the cat:

After applying Fire Putty:

New flexi-end clamped on:

Here's how the the front end near the cat sits in the mount. The mount's a little worn but decent enough - it's not going anywhere. I may renew it later


After hanging the rear end of the pipe and clamping the two halves together. I used paste in the joint to seal it:

Even though the new cat is a round barrel shape compared to the original flat one, there's plenty clearance and it fits fine. The sticker instructed me to run the engine on a fast idle for 10 minutes to help break-in the new cat, which I did.
The new cat also has the EU type approval stamped onto it, and it came with a certificate to prove conformity, which is nice.

There's a slight difference with this new system in that on the rear half of the pipe, there are two hangers, where on the old one there is just a hanger on the nearside. I think some years of 406 must have the hanger on the other side, so this system can be used on both variations. I was ready to hacksaw the unneeded hanger off, but it doesn't foul anything once in place, so I didn't bother.

After all this, I was able to attach my new backbox, but I forgot to get a picture. I'll get one tomorrow as I have to adjust it slightly anyway

It looks great now!
