Zip-ty fuel screw

Need a little help with the Zip-Ty fuel screw. :) Is it "turn in for richer mixture and out for leaner" or vice versa? My sig has my current settings and my header (stock with gyt-

r insert) glows hot red at night. Any help would be appreciated. :D

the glow is normal in low light.with out air moving across the header they will glow.

in for leaner,out for richer.

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