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Yes. The engine does not need all the fuel the pump can provide so the excess is discharged by the relief valve.

You probably just want to keep changing parts, but it would be really helpful to know if you have the correct pressure and volume. And if not, which one is deficient.
Actually it probably will need 90% of the fuel under full load & WOT.
 

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Just some back of the envelope figuring.
Given 130 crankshaft horsepower at full throttle
Given a specific fuel consumption of about 0.4 lbs/hr/hp
Given gasoline is about 6 lbs/gallon
130 * .4 = 52 / 6 = 8.7 gallons per hour at full throttle.

I couldn't find the specs on the OEM pump but AEM offered a high flow option for 1k bikes that stated it would flow 84 gph at 43 psi. My guess is the OEM has at least 100% reserve.
 

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Registered
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176 Posts
Just some back of the envelope figuring.
Given 130 crankshaft horsepower at full throttle
Given a specific fuel consumption of about 0.4 lbs/hr/hp
Given gasoline is about 6 lbs/gallon
130 * .4 = 52 / 6 = 8.7 gallons per hour at full throttle.

I couldn't find the specs on the OEM pump but AEM offered a high flow option for 1k bikes that stated it would flow 84 gph at 43 psi. My guess is the OEM has at least 100% reserve.
You're saying they over engineered the pump? If so why are people wasting money putting an expensive high output AEM pump in the bikes?
 
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