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930turbo 930turbo is offline
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Join Date: Jul 2006
Location: Valrico Florida
Posts: 200
The WUR has a boost enrichment function built in from the factory. The problem with this design is, the enrichment comes in as soon as boost appears at about 3000RPM. The mixture does not need enrichment until about 4000RPM, which creates an over-rich condition between 3-4K RPM. The additional soleniod is normally closed, blocking the boost signal from the WUR until the desired engine speed - 4000RPM - thus eliminating the over-rich transition.
'77 930 turbo Garretson I/C 1 BAR spring, (2) '82 Triumph Bonneville Royal Wedding Edition
Past rides: '74 914 1.9 liter twin plugged track car, '83 928S, '87 924S, '75 911S w '78 ROW 3.0, '72 911T, '70 911T and various other insignificant domestic examples. Happiness is a grey tailpipe! Turbo's worth the wait!
Old 02-25-2007, 08:29 AM
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