Here's a clip of my 1LT with the Flowmaster American Thunder Axle-Back and JBA Short Headers. I also have electrical cut-outs that you will hear open and close. The sound in the video isn't as good or as deep as the sound is in person but you can get the idea.
YouTube - ‪101 3439‬‏
And it was about 20 degrees so that's the reason for all the smoke.