Not so fast. 46 mpg is 200% of the combined EPA for that car. Raising it another 15-20% won't be accomplished with a couple of simple aero mods. It can be done with a lot of effort, but based on the OP's single 36 mpg fuel log entry 3 years ago, I'd guess the current 46 mpg is a fill artifact.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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