Thats interesting. The filters show richer mixture on the wideband wide open, but no difference idling or cruising than the screened lid. The screened lid show little difference than no lid at all. I really wanted to get to the track today to sort this all out, but its no gonna happen for awhile now.

http://www.youtube.com/watch?v=aIxaesJ190U

http://youtu.be/lCZAaN7fFLg