I have a 2000 Zr 600 efi. I have Black Magic twin pipes on it with Black Magic heads, clutch, boyseen reeds, efi chip. Now i wanted to buy a different silencer for it but i called Black Magic and they said that i cannot put another silnecer on those pipes it won't work. Now if i were to buy a single pipe or some other brand of twin pipes would i have to change the clutch or anything else? Or would i just install the pipes and silencer and be good to go? This sucks i'm really getting frustrated bang your head I don't know why i can't add a different silencer to my pipes. PLEASE HELP!!