i have a 58mm link pipe and a stubby silencer,as i live in the middle of a residental area and start work at 6am a race can is not a good idea for me as i dont want to upset my neighbours,there is a 50mm link pipe on ebay and i have a blue flame twinport can in the shed,using a smaller bore link pipe woud that affect the power or am i better off getting a road legal 58mm bore can?