Today in the CMM vehicle service center we had a Holden come in for a standard car service but a complaint was made that the engine has been quite noisy lately and the owner was a bit worried about this and wondered if it required any extra car repairs to get the Holden back to sounding normal again so when we carried out the usual car inspection we paid special attention to the Holdens exhaust system and when we did we found the owner had damaged one exhaust muffler possibly over a high curb or speed hump