Thread: From 13.5 to 17 MPG with an Class B RV
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Old 12-04-2009, 11:50 AM   #14 (permalink)
thatguitarguy
Master EcoModder
 
Join Date: Nov 2009
Location: Leadville, CO
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Maroon Ballon - '98 Chrysler Town & Country LXI
90 day: 26.42 mpg (US)

MaEsTRO - '95 Geo Metro 5spd hatch, 3 cyl
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Quote:
Originally Posted by mpvue View Post
years ago, I was able to tune my Dad's 460ci F250 for a few extra mpgs by putting a heavier spring in the carb; IIRC, he went from 9mpg to around 12-13.

Increasing FE by 3mpg from 40 to 43mpg is worthwhile, but going from 9 to 12mpg is a 33% increase, and that's HUGE.
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