BMW E31 840Ci V8 sound with Supersprint full exhaust system

Supersprint full exhaust system including:

n. 784701 Manifold right - left
n. 784111 TConnecting pipe kit "Y-Pipe" right + left
n. 784102 Front metallic catalytic converter right - left 100 CPSI
n. 785013 Centre pipe "X"
n. 785023 Connectin pipe for rear exhaust left
n. 785026 Rear exhaust left OO 90
n. 785006 Rear exhaust right OO 90