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OSI930 OSI930 is offline
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Join Date: Dec 2004
Posts: 689
The knob controls the frequency valve duty cycle for fuel enrichment. All the way left is off, 1 step clockwise is 20% duty cycle which is minimum enrichment, 2nd step is 25%, 3rd step is 30%, and the 4th step clockwise is 40% duty cycle which is maximum enrichment. The system relies on a Hobbs switch to recognize boost pressure and is typically activated at 0.6 bar boost pressure. You can go to to read more about it as they still list it on their website. I can email you the installation instructions as well.
Old 12-19-2007, 05:55 AM
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