This page should be considered as an addendum to LaMonster's desmog page, where you can find otherwise complete desmogging instructions.

[click on any image for a larger view]

This page is to help clarify what to do with the No. 6 hoses after removal of the smog equipment on California bikes.  Several people had very poor running if the No. 6 line was connected to the airbox.  To quote the relevant portions of Lamont's instructions:

There is a tube that is about 3/8" in size on both carb banks. DO NOT plug this! How do I know that? You guessed it again didn't you? This was the only big mistake I made on the whole deal....besides buying the kit that is, this is a carb vent tube, it needs to be open or not only will it not run right but when you go to pull the caps off of the back of your intakes it will puke fuel all over the place. That was my first clue I did something wrong. What I did is just swiveled it down.

Mike Tibbet (AKA GJunky) came up with the best solution.  Cap the No. 6 tee with a Purolator vent filter # B13153.  Plug the corresponding hole in the airbox.  One can just jam a vacuum cap in there.

Many also remove the top set of six tubes (like the bowl drain tubes below, these tubes are a set of six that flow into a six-way tee).   LaMonster's desmog instructions call for just capping the line after the tee, (see the picture marked "plug this tube") but the whole point of desmogging is to eliminate potential vacuum leaks.  So, one may wish to remove all six lines and capped them with rubber vacuum caps, available at most any auto parts store.  One of the caps is visible in the closeup.

Note: removal of any emissions control equipment is legal only on bikes that will never be used on the street.