[Vwdiesel] to turbopump or not to turbopump

[Hayden Chasteen]

I have scoped out a injection pump from an 89 Jetta.  It looks exactly 
like a turbo pump but was on a car that had the altitude adjustment 
system.  Now if I understand how this worked, it used vacuum to 
decrease the fuel volume at high altitudes and when decelerating.  If 
attached to the manifold with the pressure line instead, would it work 
just like the turbo pump?  In other words, instead of pulling up on the 
enrichment diaphram, raising the cone and decreasing the fuel would it 
do exactly the reverse?  BTW Bosch number on the pump is 460-494-200, 
don't have the VW number.  Any one know the answer to this riddle?  
hayden

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