The E46 M3 is an incredible driver's car. However, most will agree that the sound isn't exactly the most pleasant thing in the world. Luckily, with a Valvetronic Designs Section 3 Valved Catback Exhaust, you can unleash the true sound hidden in your E46 and enjoy it to its fullest potential. What do you think of this sound? Share your thoughts in the comments!
