Originally Posted by TheGlassMaker
It opens up the exhaust a bit more to help release some power, plus it sounds better.
Sent from 34.0764° N, 118.4296° W
Actually the rear lunch box is not a restriction to engine power in any way on these cars, so its all for making the car louder and depending on your tolerance making it much more annoying.
Any modifications to the exhaust system would only modify the warranty on the exhaust system and the engine if and only if it can be proven to cause the damage to the rest of the vehicle or power train system.