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It would actually be "not" vacuum enrichment. When you open the throttle, vacuum drops. A little richer mix at that point helps get things started a little faster and cooler.
Putting boost on a NA/FI car is a technical undertaking.
I have the 75-84 CIS manual which includes b21ft turbos, and the sensors and wiring for the turbo make it seem easier to install the complete engine and all, than to convert the b20 to boost.
All the CPR's have very close pressure settings about 375kPa max. The boost sensitive one drops to abotu 275 for a second, using an intake press sensor and and a 'delay' valve. There's another type listed called 'altitude compensating'.
That may be the one that has an actual 'vacuum' sensor.
v_performance makes a supercharger kit, but I like this:
http://www.djhudson.com/video/turbo_amazon.wmv
(or http://www.djhudson.com/video right-click on turbo_amazon.wmv
and 'save target as' to get a clean load of it)
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'74 145e T-5 'Orange Alert'
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