Join Date: Jun 2012
Location: Paradise, NL, Canada
are you noticing any oil consumption, that seems to be a possibility for the soot. Looks like you done the mod with removing the spark arrestor and the core that would normally block it from expelling over the tail fender but if the soot is a recent occurance, then I would test the following:
in neutral stand next to the bike looking at the exhaust, rev it and see if you see soot before hitting the redline and note the rpm.
My '08 (no mod on the exhaust), who still burns a bit of oil, will exhaust the soot at the 5500rpm range....so far the oil consumption is still cheaper then adding a new piston kit (budget will not permit it yet) so I just keep monitoring oil levels and keep my rpms in a 4000-5000 range. seems to keep down oil consumption and the soot for now.