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turbo efficiency question

 
Old 10-24-2017, 05:18 PM
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If your driving up a 6-7% grade at 60mph, is it more efficient to stay in the high and rely on the turbo boost or downshift one or more gears and run with zero boost?
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Old 05-26-2018, 09:44 AM
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Pretty confident it would be best to downshift - you're leveraging gearing vs engine output. Depending on your gear ratios, you should have more torque when downshiifting - at least when we're talking lower gears. It's gets close as you move up through the gears. In the end, the answer lies in where ever you get max torque.
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