Loud Engine on 2007 Pontiac G5

I am the second owner of a car that was in a front end collistion. The car is loud. It actually sounds like the RPM's are really high but, they are not. The noise "speeds up" with the aceleration of the car.

Asked by for the 2007 Pontiac G5
2 answers
I have a 2007 G5 and find that my engine has also sounded loud when it gets up around 3000 RPM's
Sounds like a damaged exhaust manifold, exhaust pipe or muffler system.