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Old 11-14-2010, 10:16 PM   #7 (permalink)
SentraSE-R
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Join Date: Jun 2009
Location: Bay Area, California
Posts: 1,485

Mean Green Toaster Machine - '06 Scion xB
Team Toyota
90 day: 48.92 mpg (US)
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Quote:
Originally Posted by saand View Post
SentraSE-R, is there an easy way to know how to achieve maximum BSFC (Brake Specific Fuel Consumption) or is this best done with trail and error or a few acceleration tests.
saand, if you're lucky, you might find a BSFC graph for your engine on the internet. Otherwise, you'll have to do like I did, and experiment. Most 2 liter engines get best BSFC between about 1500 and 2200 rpm, at about 85% load, but YMMV. My SE-R and xB both like 85% load, but 85% on the xB is slow-moderate acceleration. 85% on the SE-R is brisk acceleration. I tested P&G on both my cars in different gears, different speeds, and different loads on the same 10 mile loop to learn what worked best.
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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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