beaups
Well-Known Member
Heavier flywheel takes more energy to spin up so if there is MPG impact, which I doubt would be measurable, it would be a decrease. In theory the energy isn't lost, much like heavier wheels and tires, but unless you're a hyper miler you won't be able to get what's lost while accelerating back while decelerating.Checked the gauge on my why home today. Sure enough, getting 1 mpg more. Could be a fluke. I will keep an eye on it as time goes on. It does hold speed better and taking off from a stop doesn't require as much throttle to get moving.
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