KER Innovaec 63.5mm semi-installation

Hello everyone! I got my 63,5 fireplace from Kat for my ng Cab today. On the EG permit is for silencer type ESD/MSD/VSD. But with the supplied system is only a VSD-Erstaz tube with it. Who has had similar experience and what does the TÜV say about it? Horny 5-Ender Sound where you can not listen to yourself. Installation is from Fox stheht at least everywhere on it. MFG