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- #21
400 metres above sea level. I just replaced the air filter last week. No snorkels or restrictions. I may just turn my fuel screw down a bit and see if that helps.What altitude are you running at? Stock they won't smoke black at sea-level but as you go up it'll get more.
What's your intake setup like? Filters clean? Any snorkles or other restrictions?
They aren't cures, but they can all help.