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Originally Posted by darcane
Look at the technique called Driving With Load. Use that with cruise control and you can improve your economy over just letting the cruise control do it's thing. As you go up a hill, bump down the CC speed, as you go down a hill have your CC accelerate.
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Can i do this with just a vacuum gauge to start with ?
Quote:
This is by design.
Regulations vary by country, but Europe and Australia require speedos to be accurate to +10% plus 4km/h but never below actual speed. US has a similar, but more complex standard that covers the allowed range. To comply with the regulations, they typically indicate 1%-2% high.
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is the odometer effected too?