Hey Curtis pardon my ignorance but what does that opacity measure? Is it unburnt hydrocarbons maybe? I'm just curious...lol I know when I lived in Colo I always thought it was getting to be a Calif East with all the BS
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2000 F-250 SCLB 2wd 7.3 auto PHP stock-65t-80dd-120race-high idle-no start 4"tb exh, wicked wheel, 3 guages, AIS, coolant filt,
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