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      02-07-2019, 08:16 AM   #15
rowsdower
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Drives: 2011 128i 6MT Sport
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That only makes sense if the turbo engine is smaller. If you have 2 engines of the same basic configuration and displacement, adding turbocharging won’t make it more efficient that the NA engine. Yes, in theory, you are capturing otherwise wasted heat, but that only happens on boost. When cruising, you’re not on boost so you’re just driving a lower-compression engine with higher pumping losses and a lot of additional weight.
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