Hi there,
I have a 1.9tdi. I removed the honeycomb from mine because of the poor replacement cats I got form german and swedish.
The honeycomb had come loose in my cat, so I opted ror a new one at just under £200 from G&S, paid a garage £70 to fit it and I was happy for 7 months until the cat came apart completely.
Under warranty G&S replaced the cat and also paid for the labour costs to have the cat replaced again, the new one was much stronger looking with a bigger bit of flexi pipe that the first cat was missing. Well 7-8 months later same thing broke at the welds, thought maybe I had a mount damaged or something, but my engine is transverse
Removed the Cat myself this time and still have got to go get my money back from G&S, but decided to remove the honey come with a hammer and a big screwdriver, 15 min job, replaced the empty pipe (Audi one) that had done 130K and its still going strong, you get a bit more smoke on start up but that is about it. Its ok any other time.
Dont know about the MOT yet but will find that out in about 4 months
time
Regards
Dave