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A higher flow filter should act less like a choke point in the lubrication circuit, allowing more oil under higher pressure (less post-filter pressure drop) to get to the parts that need it. Check the Hall of Wisdom, I think Shazaam did a write up on this. If not, I'm sure he will ;)

In practice, I don't know how much affect, if any, modern filters will have on oil pressure within the circuit. I'd be more concerned about filtering ability of the medium.
 

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Please correct me if i am wrong.

Oil pump>oil filter>engine parts.....and back to the oil pump.
But, any resistance in the system can affect the flow and pressure. In this case if the oil pump pumps the oil into the oil filter and the filter has less resistance, then the oil pressure must drop upstream regardless of any other resistance before or after the resistance(high flow oil filter).

Think of the filter in terms of an electrical resistor... assume before the resistor voltage is 12 volts; after the resistor is 10. If there is less resistance (higher flow) there would be more electricty (oil) to power (lubricate) the device.

There's alot of fluid dynamics going on in the system, consider different oil viscosities from not only the rated oil weight but temp. differentials within the system. In the end, a higher flow filter will not cause less pressure or volume of oil supply to the parts. In the event that the filter is clogges, or causes too much resistance, there is a bypass circuit that will supply unfiltered oil to your engine.

Just beware of how that higher flow is achieved... either by more efficient media (paper/cellulose vs. fiberglass vs. stainless mesh); More porosity (bigger pores=less filtration) or more surface area of the filter element.
 
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