To All:
I've been posting VW info to the internet for more than ten years now. The poop I've posted is based on my direct, personal experience with air cooled Volkswagens dating from 1954 and I'm still learning; my daily driver is a '65 bus backed up by a 67 baja. My wife drives a 71 Ghia and there are four other VW's around the place.
If you want to find out what I've posted -- and in what context -- call up Google's 'advanced search' feature, enter my screen-name (veeduber) as the author and type the subject you want to locate in the 'exact phrase' field, such as full-flow, CDI and so forth.
Please keep in mind that I'm not claiming to be any kind of an expert, I'm simply stating what worked for me. I mention this because you will see that most of the things I've found to be useful in maintaining my vehicles and making them more efficient do NOT agree with the Conventional Wisdoms espoused by those who DO claim to be experts. For example, I always thought the -009 was a piece of shit. And I found no electrical difference between a blue coil and a black one. And I've always said so.
I've posted this because the answer to Dan's question is that I've already answered it, several times over and in several different ways. But the odds are, I've said exactly the same thing in each of those answers and see no need to do it again.
-Bob Hoover