Soot around the exhaust outlets


jwcfbd

Administrator
Registered
#1
Just wondering.  I have noticed that I have soot around the exhaust outlets and wanted to know if this was normal of if I might be running rich. The soot is around the muffler outlets. I am running Yosh RS3 and had it remapped about 800 miles ago.
 

Narcissus

Hayabusa Immortal
Moderator
Registered
#2
Probably just a bit rich, which is normal, even stock. Remember that the A/F ratio is lower than it is for cars, since we don't have to deal with emissions the same as with cars.

Got piped or stock cans?
 

MET

The Watcher
Registered
#4
Still sounds like it could be a little rich. Check the map you are using. You may try going down one step on your PC II, but i would only do that if you have a way to check the mixture levels i.e. Dyno with sniffer, or Haliometer.
 

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