Hi - the car went off the road for 8 months with the usual fuel pump failure. I bought the car last week and replaced pump, car now running ok to the ear. However - the Vectra failed mot on emissions today. The mot tester thinks a small hole in the exhaust system could be the problem? No error codes showing under diagnostics. Could he be right? The Vectra has done no miles at all since pump change. Anything else to change after new exhaust to get those emission numbers down?