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Hypermiling for cheap using iPhone

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by , 05-06-2009 at 07:33 PM (3952 Views)

You don't need an expensive hybrid vehicle or car computer to get the most miles per gallon out of your car. Hypermiling is a set of techniques that maximize your MPG.

Some common techniques are:
Don't drive aggressively
Don't go over the speed limit
Avoid traffic
Avoid coming to a complete stop
Try to accelerate as slowly as possible
Using neutral when going down hills

Some uncommon techniques are"
Drafting behind trucks
Using centripetal force to go around turns fast
Over-inflating your tires to reduce friction

We took a look at how what kind of MPG we got out of our Toyota Matrix when doing basic hypermiling around town. We averaged 61 MPG when hypermiling and 27 MPG when driving normal. At some points on the trip going down hill in neutral we got up to 247 MPG.

If you have any of your own techniques or stories of your own hypermiling let's hear it.

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Updated 09-17-2009 at 03:08 PM by optikalefx

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I would think that the car computer/ecu can calculate flows etc. However it will be wrong info. Everything displayed on the dash will be slightly wrong (assuming it was correct in the first place) speed odometer mpg.

Taxi drivers in some places install smaller tires so all the equipment in yhe car thinks that the distance travelled is more and the taximeter charges you more.
We also need to know if your RPMs take that into account, and then we need to know how much the diameter affects your MPG. Along with that to make a comparison we need to know how much friction loss you get from inflating to the equivalent amount, and see what the MPG is of that.

My guess is that you will need to over inflate a lot less because of friction than the extra revolutions that occur as a side effect.
Just to see how much if affects the readins I will try to measure by how much the diameter changes.

Will report back