Fuel injectors lbs question

snosourfur · October 29th, 2009, 11:56 AM

the heavier the lbs of the fuel injector the more fuel is atomized and injected into the intake manifold correct?

Trick Tuners · October 29th, 2009, 12:51 PM

Nope, the "lbs" is lbs of fuel per hour, not pressure.

BLOWN2V · October 29th, 2009, 01:45 PM

Originally Posted by Trick Tuners

Nope, the "lbs" is lbs of fuel per hour, not pressure.

x2

03SonicBoom · October 29th, 2009, 01:53 PM

Originally Posted by Trick Tuners

Nope, the "lbs" is lbs of fuel per hour, not pressure.

Isn't that what he said? More lbs/hr of fuel = "more fuel is atomized and injected into the intake manifold"

Trick Tuners · October 29th, 2009, 01:59 PM

Originally Posted by 03SonicBoom

Isn't that what he said? More lbs/hr of fuel = "more fuel is atomized and injected into the intake manifold"

No. The ECU will only inject the fuel needed. The lbs/hr rating is for max flow. Using injectors rated for a higher lbs/hr than needed will result with LESS atomization due to the larger bore.

03SonicBoom · October 29th, 2009, 02:10 PM

Originally Posted by Trick Tuners

Using injectors rated for a higher lbs/hr than needed will result with LESS atomization due to the larger bore.

Hmmm, you learn something new every day.

snosourfur · October 29th, 2009, 02:16 PM

Originally Posted by Trick Tuners

Nope, the "lbs" is lbs of fuel per hour, not pressure.

ok my next question, the lbs of fuel per hour is actually the amount of fuel expended within an hour?? for example, if i have 30 lbs injectors, i am actually expending 30 lbs of fuel per hour of driving? and is that calculated at an idle? or at a set standard rpm? or what?

Trick Tuners · October 29th, 2009, 02:55 PM

Originally Posted by snosourfur

ok my next question, the lbs of fuel per hour is actually the amount of fuel expended within an hour?? for example, if i have 30 lbs injectors, i am actually expending 30 lbs of fuel per hour of driving? and is that calculated at an idle? or at a set standard rpm? or what?

Originally Posted by Trick Tuners

No. The ECU will only inject the fuel needed. The lbs/hr rating is for max flow.

October 29th, 2009, 11:56 AM	#1
snosourfur Regular 04 Mach1, 89 Modded GT Join Date: Jul 2009 Location: Cape Coral, Fl Posts: 57	Fuel injectors lbs question the heavier the lbs of the fuel injector the more fuel is atomized and injected into the intake manifold correct?

October 29th, 2009, 12:51 PM	#2
Trick Tuners Hardcore Enthusiast KB'd GT Join Date: Nov 2006 Location: San Diego Posts: 2,436	Nope, the "lbs" is lbs of fuel per hour, not pressure. __________________ SCT Tuning, JLT intakes, Aeroforce OBDII gauges and PLX wideband products @ Trick Tuners My forums Xcal3 SF with preloaded tunes and free custom tunes for life for $379 shipped. Custom tunes based on actual data is extra.

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