I haven't read the whole thread and know I'm not going to have a 70MPG tank without a lot more mods but, I'm hoping for a 55MPG tank in the Versa this summer. Thus far my best tank is 51.167 MPG. Current mods are 50 PSI in the tires and an aftermarket throttle controller set to economy mode. My last tank was 50.638 MPG. I know I can beat that in warmer weather.
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