2.8cq MOT emissions fail

[fzr phil]

hello there
i renewed my insurance after a few months lapse, thanks skyinsurance £480

but, horrified when it didn't pass the MOT.
steering rack gaitor which i am hoping i can glue and emissions.
from a bit of reading maybe cataclean, fresh petrol and a run will help. air filter looks immaculate, a plug looked good as well. arguable if engine was above 80degC, though he tried several times to get it through, almost an hour late on saturday.
will have to take scenic route as garage is almost on my doorstep!
a quick chat this morning and he said (his son)maybe running lean afterall and air leaks might be problem.
it has two big sport cats and louder than i like exhaust, wondering if blanking an outlet at tailpipe might help as well.
any suggestions gratefully received. i have to get a suitable vac gauge, though might be able to use one of my torr gauges (am a refrigeration engineer) and maybe suspicious of breather pipes.
when i asked if was ok last time, reply was "it has always been a *******!"

thanks
Phil

[fzr phil]

i never said *******, meant bar steward
hopefully pic attached
thanks

[Rusty]

It's got an air leak in the exhaust and the CATs aren't warming up or working properly. Had this a few times with sports CATs, they're rubbish IMHO.

[fzr phil]

thanks
will get under there 1st chance i can
would love a completely standard exhaust on that car!
phil