I have started to notice a gold like color on the inside of my chrome exhaust tips. I have an 06 Vulcan 900 with a big air kit, fi200, and Cobra speedster shorts. I have the FI2000 set at 2-1-1 and I still have popping on decel occasionally. I have not marbled the reeds yet but I am really wondering if I am still running rich. Any reason for concern by the color appearing on my exhaust tips? Any way to tell if I am running rich. I really cant imagine i am with the fuel processor turned down so far. I have read a lot of people who have theirs tuned a lot higher and the recommended settings from cobra are 4-2-1. Any help if greatly appreciated.