260% JCW
Police would only pull you if it was too loud, and then they'd only issue you a vehicle defect form. They would'nt get under car looking for a de-cat.
Vosa could stop you and check but there more interested in overloaded lorries. And TBH ive never seen i done.
As for garages, I used to work in a repair garage. If a car came in that was damaged they would take pictures of said damage, tyre wear ect then send the images off to the insurance company. same as if it were written off. They wouldnt go looking for de-cats ect. Obvious things that stand out a mile yes.
Vosa could stop you and check but there more interested in overloaded lorries. And TBH ive never seen i done.
As for garages, I used to work in a repair garage. If a car came in that was damaged they would take pictures of said damage, tyre wear ect then send the images off to the insurance company. same as if it were written off. They wouldnt go looking for de-cats ect. Obvious things that stand out a mile yes.