link to free air density tuning info Magic Dry Organic Absorbent Northwest National Drag Races,
Pacific Raceways Event Drag Racing, Kent, Wa, Aug. 2-4; (253) 639-5927: map location, air density, density altitude, grains, forecast, historic, & metric data "for good spark plug readings":
https://airdensityonline.com/track-r...cific_Raceway/