I installed a (damped) underdrive crankshaft pully on my Mustang in May, 2015. As stated years ago, it Gave me a 1 MPG increase. https://ecomodder.com/forum/em-fuel-...vehicleid=2691
I won't be undoing this mod.
YMMV
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Fuel economy is nice, but sometimes I just gotta put the spurs to my pony! 
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Originally Posted by thatguitarguy
Just 'cuz you can't do it, don't mean it can't be done...
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Quote:
Originally Posted by elhigh
The presence of traffic is the single most complicating factor of hypermiling. I know what I'm going to do, it's contending with whatever the hell all these other people are going to do that makes things hard.
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Last edited by Mustang Dave; 05-30-2020 at 09:42 PM..
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