(26-07-20, 09:38 PM)Grahamm link Wrote:

• Thing is, aftermarket cans are bad for bikes because the exhaust system is designed to give a certain amount of back pressure. If that isn't there, hot gasses can escape from the cylinder and burn out the valves.
  
• Well there's always the "Loud Pipes Save Lives" brigade who think that it makes people notice them more (which makes as much sense as riding around with your thumb on the horn button all the time).
  
• What *really* saves lives is Defensive Riding and them not expecting everyone to get out of their way...
  

• yes, but only if you then after fitting the 3rd party endcan don't then adjust the fueling to match.
  
• As someone who commutes into London daily, I have to state that the other driver/s will often hear me before they see me. Evidenced by the fact I had proportionally more near-misses with the stock can than I did with the aftermarket one. My can is louder than stock, but not obnoxiously loud.
  
• Indeed.