That will be an interesting graph! I very much doubt your engine's BSFC will be anywhere near 5100 rpm, but it will be at a much higher % engine load than you've been using. In both my xB and SE-R, 83-85% load worked best. It's moderate acceleration in the xb, but pretty spirited in the SE-R. I'll bet it's gut-wrenching in your 4.6.
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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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