treynor
Enthusiast
Interesting data point -- these are two dyno runs of the same car, a month apart, under different conditions.
Run 1 (red): 6/16/01, Chevron 92 octane gas, air pressure 30.17 in.Hg., Vapor pressure 0.41 in.Hg., air temp 71.3F, correction factor 0.97SAE
Run 2 (blue): 7/21/01, Chevron 91 octane gas with 1 bottle AMSoil octane booster, 30.07 in.Hg., Vapor pressure 0.42 in.Hg., air temp 79.4F, correction factor 0.99 SAE
Also of note: I started the 7/21 run at around 1500 RPM to get a better idea of how much low-end I'd lost with the headers and ported head. Apparently, I lost nothing -- the modified car still makes 400 ft/lbs at the bottom.
Run 1 (red): 6/16/01, Chevron 92 octane gas, air pressure 30.17 in.Hg., Vapor pressure 0.41 in.Hg., air temp 71.3F, correction factor 0.97SAE
Run 2 (blue): 7/21/01, Chevron 91 octane gas with 1 bottle AMSoil octane booster, 30.07 in.Hg., Vapor pressure 0.42 in.Hg., air temp 79.4F, correction factor 0.99 SAE
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Also of note: I started the 7/21 run at around 1500 RPM to get a better idea of how much low-end I'd lost with the headers and ported head. Apparently, I lost nothing -- the modified car still makes 400 ft/lbs at the bottom.
