I just bought one of these big diagrams from Mazdaformance. It's the size of a foldout calendar, with three transparencies that fold over the hose diagram. Color tracings on the transparencies indicate which hoses are subject to boost, vacuum, etc. Should be useful for diagnosing problems. Or you can throw it on the overhead projector at work to see if your coworkers are paying attention to your presentation.

If you're interested, you can get 'em here:

http://www.mazdaformance.com/rx7.htm

look under "tune up" and go to the last item.

 

thanks for posting that, I don't think I would have noticed it otherwise... will come in VERY handy when I get off my lazy bum and do the vacuum hoses...