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Old 08-11-2009, 12:08 AM   #12 (permalink)
RobertSmalls
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Quote:
Originally Posted by basjoos View Post
A hybrid system gives little FE benefit (and can actually hurt FE a bit due to the added weight of the hybrid system) if most of your driving is highway miles.
Only if you're GM and you're doing it wrong. The right way to do it is, if your car had a 2.2L gas engine, replace it with a 1.6L + electric motor that provides the same acceleration around town, but gets better mileage on the highway due to the smaller displacement.

Or, in the case of an Ecomodder with a lightweight, aerodynamic car, you really don't need more than 20HP on the highway and short bursts of 40HP around town, so a high-tech, 0.3L gas engine and a 15KW electric motor should do you.
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