Thread: "MPGiata" modding thread: aiming for 50 MPG with a 1990 Miata. Update: success, 55 MPG!
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Old 09-09-2020, 06:01 AM   #325 (permalink)
teoman
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1m^3 of space filled with helium will make your vehicle lighter by 1 kg. (Air is approx 1.25kf/m^3 and He is 0.25)
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