Quote:
Originally Posted by dsm-onster
or plenty of dyno time will net you higher Brake Specific Fuel Consumption.
Higher BSFC means more power per unit airflow or fuel flow.
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Matt, that's a really great post with a ton of good info. There's just one thing I think you accidentally misspoke about that I'd like to try to clarify...
BSFC, brake specific fuel consumption, is a measure of the weight of fuel (in pounds) that an engine uses per hour for each horsepower it produces.
Lower BSFC, not higher, is better and means the engine is more efficient. Naturally aspirated engines usually have a BSFC of around 0.45-0.50, turbocharged and supercharged engines generally have BSFC of between 0.55-0.65, likely because of the richer mixtures needed for fuel cooling of the hot air charge. However combining high CR and moderate boost with correct timing and fueling will likely push the BSFC down at least close to the typical N/A values, just as you alluded to.