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The optimal shift points when accelerating are lower than what you get from the BSFC chart. That's because you are using fuel to spin up the engine, then throwing that kinetic energy away when shifting.
I use first gear just enough to get rolling, then immediately into second gear. If not in a hurry, I'll shift out of first as low as 1000 RPM. My technique is mash the gas pedal about halfway or a little more, then set the shift points to get the acceleration that I want. Typical shift points range from 1500 to 2500 RPM, and rarely as high as 3500 RPM pulling onto a highway uphill.
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06 Canyon: The vacuum gauge plus wheel covers helped increase summer 2015 mileage to 38.5 MPG, while summer 2016 mileage was 38.6 MPG without the wheel covers. Drove 33,021 miles 2016-2018 at 35.00 MPG.
22 Maverick: Summer 2022 burned 62.74 gallons in 3145.1 miles for 50.1 MPG. Winter 2023-2024 - 2416.7 miles, 58.66 gallons for 41 MPG.
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