Hello and a healthy new year! I bought a HXC sports muffler for my Kati (LC4 640 BJ98). I would like to ask you a few questions 🙂 (I bought the exhaust at ebay and only get it in a few days.) 1. I bought it mainly because of the better look and sound. However, I don’t want to give away the possible extra power – what do I have to do to get the optimal performance with the muffler ?? (I don’t want to go to the P my air filter is completely original and as a carburetor I have a Mikuni BST40 in it, but I don’t know what kind of nozzle is in it. 2. What do you need to re-suppress the exhaust? Where do you buy this at the best, and what can it cost? Would it be installed to attach the lid to the rear of the silencer? Just weld nuts or how do you do it at the sc 3. What about the legality ? Can I drive the part on the road ? If yes, I have to have it registered ? (I have to go back to the TÜV in the spring anyway) Thanks already for any answers ! Greetings