Sentra SER,
What's the difference between hot FE and cold FE? (ie, is hot FE 2x more efficient?) Nery's father (-or bro?) saw 5 - 10% increase in FE. I'd assume most driving can't be that influenced by cold start up... unless you took a lot of short trips...
I'd guess air pressure would make a big difference, although nobody does a 1 hr pursuit bike race at extreme elevation. But, they don't do it at sea level either. Human powered may be vastly different than ICE powered.
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