OK I went back and read the FULL post again.
My original statement: Most either don’t know or don’t care regarding the use of 2 cats originally.
Your comment regarding the MOT testers comment:
“really! so my MOT License, criteria set by the DVSA would be removed if I failed to follow the set guidelines” Daft comment he stated.
I return with the guide lines (still current whatever year it is) he should be following stating that the removal of a cat is a failure. Fitting of an aftermarket manifold that does not include a cat is therefore not MOT compliant.
There are many on here that have these manifolds fitted and are passing MOTs just fine. To me that says either the MOT testers don’t know there were supposed to be 2 (which is obviously their best defence should they be caught out) or they don’t care as long as it passes the computer test and has at least 1 cat fitted.
And there’s nothing wrong with back street garages.