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Message: <blockquote data-quote="Adam" data-source="post: 94506" data-attributes="member: 8249">19lbs injectors will support 337 CRANK hp at 100% duty cycle....not where you want to run them, nor where they want to run. You need to run 24lb injectors when approaching 300rwhp level. 24lbers will support 426 crank hp. This is on a NA motor, a motor with a poweradder will support considerably less. For example 36lb injectors on a blower motor will only support 480crank hp where as they will support 640 crank hp on an NA motor. The BSFC(Brake Specific Fuel Consumption) is much higher on blower cars. BSFC is the pounds of fuel it takes to make one HP for one hour.Adam</blockquote>