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Old 08-03-2010, 10:13 AM   #11 (permalink)
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Originally Posted by SuperHatch View Post
I would venture to say, that if you are putting enough load on the engine at 2000RPM to induce knock, you should downshift at least one gear. You will probably accelerate quicker with less throttle input and as a result, use less fuel. A fuel consumtion calculator like scangauge or MPGuino will help prove this point.
That is likely going to give worse mileage. You don't want to use less throttle, you want to use more throttle to decrease pumping losses. This is why P&G works so well.

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