No both cats out and with my other old exhaust cat back that i had, which was two pipes then going back into one and joining into the back box that i have advertised on the for sale section i was getting 1.2-1.3 bar, but since replacing the cat back section for another one as one of the pipes from the old system had a whole in it i am now only hitting 0.8-0.9 bar, but im a bit confused as the cat back that i replaced it with is a singel pipe, which is larger than the old system pipes 2.75" and the tail pipe is 4.5" it seems to be such a restriction?? It is also very quiet, when i first switched my engine on i thought it wasnt running thats how quiet it is!