Quote:
Originally Posted by scottmcphee
Don't understand why adjustability is required for anything other than spring fatigue over time.
Don't see the need to overpressure the fuel in the IP, either there is enough pressure to deliver the volume to the delivery valves, or not. So long as there is enough pressure, the valves are full and you get a full charge down the line.
Once the critical pressure is met, what does the extra pressure buy you? Nothing. It can't possibly increase the flow to the injectors. It can't possibly change your MPG or power.
To get the critical pressure, just replace the original spring, or stretch it a bit, as per FSM.
None of the poll options have what I'd vote for, so I didn't vote.
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I pretty much agree with your comments.
But, what I am thinking is that the Performance guys would be interested in upping the pressure because they are trying to max out the Injected Fuel quaintly.
So with more Fuel injected there is less Fuel left inside of the Element after Injection and that means more fuel has to pass through the fixed size feed hole in the Element; but, there is no extra time to do that.
A higher pressure will move a higher Fuel Volume through the feed hole given the same amount of time to do so.