Big Jim, very informative, but I must correct one thing: Normal room air (and outside, too) is 20.9 % Oxygen... Sorry, I'm in the 02 business. 
Ride: 2000 T-red SE
Beats: Kenwood 316S, Alpine MRF200, Orion XTR 6.2, Coustic 400SE
Mods: CTA, Magnaflow exhaust, SVT Instrument cluster, Knuaberized doors, side markers, F***ed up painted headlights.
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