Hello together, I play with the idea to give my CM Cooper S a little more sound (… without exaggerating it though). Meanwhile, the rear silencer (model: 18302239423) by JCW is available for 470 €. Has someone already built this part and can tell about first experience? How elaborate is the installation, how does the exhaust sound (…very intrusive or still suitable for neighborly use?) It would also be interesting if a retrofit to the old system is possible, if it is possible. too loud (…a customer can be found over the forum determined 😉 Looking forward to your information. Greetings