A-B testing and results...
Conditions:
Temp 16 C / 61 F
Wind NE 13 km/h / 8 mph
Pressure 102.4 kPa
Humidity 42%
Test route:
Flat 2-lane highway; no traffic in my lane; occasional oncoming traffic; ~80% of the distance in a forested area (sheltered from NE breeze).
Results:
52.5 mpg (US) = 4.5 L/100 km = average,
all A runs
47.0 mpg = 5.0 L/100 km = average,
all B runs
11.6% / 5.5 mpg US improvement, A over B
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I'd call that a healthy success. Some of these mods could be re-done and made to look OEM, too.
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Raw numbers:
Code:
A (mods in place)
North ... South ... Average (MPG U.S.)
53.2 ... 52.3 ... 52.8
53.1 ... 51.6 ... 52.4
52.6 ... 52.4 ... 52.5
53.5 ... 51.2 ... 52.4
B (all mods removed/reversed)
North ... South ... Average (MPG U.S.)
46.4 ... 46.9 ... 46.7
47.3 ... 47.0 ... 47.2
48.2 ... 46.0 ... 47.1
48.1 ... 46.4 ... 47.3
STDEV all A runs: 0.5
STDEV all B runs: 0.7