Infiniti Q50 with Stillen Catback Exhaust Tunnel run
Infiniti M56 Stock exhaust vs. Stillen Cat Back vs. Straight Pipe
the stock exhaust clip was from iPhone and the rest from Android so the sound is slightly different. hopefully it give a good idea of the change in sound though.
+AP True. Those shitty microphones pick up on all sounds. There is a reason why it takes many years and great skills to become a good sound artist/engineer on big budget Hollywood films. Recording sound is a difficult task.