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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Cheap Fueler concept.

One of the ways we get more fuel is to lower control pressure on boost so the metering plate advances further and thus moves the metering pin further so more fuel passes thought the head.

Thus, advancing the pin gets us more fuel.

We can also advance the pin with the CO adjustment screw. This can get us more pin extension but at some point the AirFuelRatio at lower air flows is going to get way to rich.

To accommodate this we could plumb an air passage around the Metering Plate assembly with a valve in line to adjust how much air we allow to pass.

This should allow us to tune the AFR's back to the normal ranges at lower rpm.

At higher RPM the metering plate is still going to advance to its typical stall point given the on boost control pressure it sees. Having adjusted the CO screw the metering pin will have moved further allowing for more fuel just as if we had lowered control pressure.

Just a thought.
Old 11-22-2009, 08:57 AM
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