mig regulator PSI questions

Lonewolf3165 said

The gas isn't supposed to control spatter. It's to shield the weld puddle to keep out contamination in the air. Try adjusting your wire speed & heat to reduce spatter & use a nozzle dip or anti-spatter spray on the gun. It should sound like a continuous hiss when welding, like frying bacon.

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I don't disagree with you, and when welding all new metal in a draft free area on a table, the flow on my machine can be reduced to what the manual suggests. Unfortunately, when restoring an old car, the condition of the metal is usually far from perfect, and often located in an area where accessibility is restricted, so I have to adjust everything until it works best. I find that increasing flow helps control spatter in these conditions.

That said, I'm not a trained welder, so I'm always learning something new and appreciate suggestions.