I have filmed the awesome Chevrolet Camaro GT3 tuned by the German racing company, Reiter Engineering. This car is equipped with a massive 7.9 liter Katech V8 producing around 650HP and 800NM of torque, and here you can see it making lots of noise during a private test day at Monza circuit.
http://www.youtube.com/watch?v=EJFAWSlr_d0