Hi Guys, I've been trawling through the forums looking for a definitive answer on max DB levels. I have a 1975 Honda Cb400f, the original exhaust passed away long before i got the bike, so I have a brand new aftermarket reverse cone with a baffle in it fitted. It just failed a Blueslip, because the inspector 'thought it was too loud' so now i need to get it tested. But I don't know what the limits are? Can anyone help?