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Old 05-12-2012, 04:36 PM
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High flow injectors, by themselves, will not increase horsepower. When the airflow capability of an engine is increased significantly, additional fuel must complement the increase in airflow in order to support more horsepower. Thus, the proportional increase of air and fuel together will increase horsepower.
The factory fuel injection system operates slightly rich from the factory. Because of this, certain engine upgrades such as low restriction air intake/exhaust systems and/or slight increases in boost pressure can usually be taken care of by the factory fuel injection system. In most cases a naturally aspirated engine will have a B.S.F.C of .50. This means that the engine will use .50 lbs. of fuel per hour for each horsepower it produces. Turbocharged engines will want to be at .60 lbs. per hour or higher.
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