A new wonderful noise, oh joy! Exhaust leak?

It is possible that the new wonderful noise you are hearing is an exhaust leak. Exhaust leaks can occur when there is a hole or crack in the exhaust system, allowing exhaust gases to escape. This can cause a variety of noises, including a hissing or rattling sound. Exhaust leaks can also cause a loss of power and performance, as well as increased emissions. If you suspect that you have an exhaust leak, it is important to have it repaired as soon as possible to prevent further damage to your vehicle.