What would be the benefit if one increase the pop pressure on an injector from the stock setting?

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1984 300D, 1972 LT1 Corvette, 2014 Artic White 3LT/Z51 C7, 2013 650i Convertible BMW, 1994 Kawasaki Vulcan, 1992 Yamaha Seca II and 1996 Dodge Ram 2500.

No benefit. It will retard your timing. Rebuild them back to stock pressure.

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CENSORED due to not family friendly words

If you're burning WVO, the key is heating the WVO to 180F*. At this temp, the grease behaves just like diesel. Thicker grease can be atomized with different nozzle applications, but you'll only get so much mojo out of thick WVO. You can thin it with diesel also, but heating is the real key IMO.