New small mufflers= rich feed ! Strange!

[Karlos]

Replaced stock exhaust with small mufflers now my fuel mixture seems rich when was expecting reverse any explanations please?

 

[5twins]

Although the stock exhaust is very quiet, it flows quite well. Those new mufflers you put on probably don't flow as well. Straight pipes are the same deal. They make a hell of a racket but don't perform as well.

 

[Classic]

What exact mufflers?

Check out this read on exhaust pressure and velocity.
http://www.honda-tech.com/showthread.php?t=2077910

 

[Karlos]

They were not branded just named reverse cones,very loud,bikes running ok (for now} but rich since change!