Quote:
Originally Posted by William0882
Every time you shift, you burn gas to charge that turbo.
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thats not exactly how it works...
Quote:
Originally Posted by theholycow
How would adding a turbo to an existing engine help FE? The only way I know of a turbo helping FE is by allowing you to choose a smaller engine. The energy that spools a turbo is not free, it comes from the exhaust stroke...
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when the turbo gains a certain momentum under cruising conditions it can allow for negative pressure to occur between pulses of the engine depending on how free flowing the exhaust is after the turbo. its a strange phenomenon that some have experienced in civics that have had a good tune. i would never add a turbo for mpg though it is just a minor added benefit. there could be more too it as far as efficiences in air flow, but i am not certain on the details before combustion.
kakaroto_ss4 
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