Originally Posted by Stratus650
Please add it to the initial post.
Saw this by chance on Youtube by a british company.
BMW 1M WITH BCS VALVETECH PERFORMANCE EXHAUST SYSTEM
I have had this exhaust on my car for a while now and when the valves open under acceleration the sound is awesome. The vid could be better but I just love the sound. Well pleased.
Twin pipes to the rear instead of single.