Fuel Estimated Horsepower Ratings

stang89bidges

Advanced Member

Mar 14, 2014

727

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Fort Worth Texas

Apr 11, 2014

#1

• Apr 11, 2014

• #1

I'm looking at these 46lb fuel injectors from LatemodelResto. It says you get lower HP with forced air induction with these injectors than naturally aspirated. How is that? I thought my SC was a GOOD thing??? Help me understand this please...

Naturally Aspirated Applications: 639HP @ 85% Duty Cycle
Forced-Induction Applications: 492HP @ 85% Duty Cycle

 

MikeH686

Mine is only two inches though.

10 Year Member

Oct 11, 2011

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Waldorf, MD

Apr 12, 2014

#2

• Apr 12, 2014

• #2

Because forced induction your adding more air above the 14.7 psia reading so more air requires more fuel

 

DesertDawg

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Apr 2, 2014

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Apr 14, 2014

#3

• Apr 14, 2014

• #3

I liked this question

 

84Ttop

They make new pistons every day, so why worry?

5 Year Member

Jul 2, 2009

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South Jersey

Apr 15, 2014

#4

• Apr 15, 2014

• #4

MikeH686 said:

Because forced induction your adding more air above the 14.7 psia reading so more air requires more fuel

Click to expand...

Mike is right on target here. Any forced induction car is going to require more fuel at the same given load. As boost pressure rises so does typically your fuel pressure and fuel consumption. You need to compensate for all of the additional air flow through the motor with additional fuel. You will also see fuel pumps rated this way. For example you may see a pump rated to 1,000 hp N/a but that same pump will only support 600 hp with forced induction.

 

FoxMustangLvr

I love my Pimp

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Oct 14, 2012

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Apr 15, 2014

#5

• Apr 15, 2014

• #5

Smart MoFo's