Injector LPM

duratothemax

<--- slippery roads
Aug 28, 2006
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I dont think so, because LB7's need wayy less pulse width than any other generation dmax to make a given amount of power.

I could be wrong though.

ben
 

MMLMM

Tunergeek
Mar 2, 2008
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I dont think so, because LB7's need wayy less pulse width than any other generation dmax to make a given amount of power.

I could be wrong though.

ben

exactly where I am confused Ben, lol.
But I was pretty sure I was told many times LB7 was 18pm, maybe the LBZ/LMM values are incorrect.
 
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LBZ

Super Moderator
Staff member
Jul 2, 2007
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So who has the exact numbers out of the book? Guy maybe?
 

IOWA LLY

Yes, its really me
Feb 23, 2007
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According to Bosch LBZ and LMM injectors flow the same. The LBZ's are 7 hole and the LMM's are 6 hole.

The interesting part is they both have the same size holes......
 

DuramaxPowered

Pushing my luck....
Jan 27, 2008
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According to Bosch LBZ and LMM injectors flow the same. The LBZ's are 7 hole and the LMM's are 6 hole.

The interesting part is they both have the same size holes......

The pulse width table says they flow different.

Stock LBZ tune 180MPA, 120mm^3 = 1833 pulsewidth

Stock LMM Tune 180MPA, 120mm^3 = 1903 pulsewith
 

SteveFord

What's Next?
May 8, 2008
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The pulse width table says they flow different.

Stock LBZ tune 180MPA, 120mm^3 = 1833 pulsewidth

Stock LMM Tune 180MPA, 120mm^3 = 1903 pulsewith

Being the tunes are written differently for those two years I would'nt think because one has more pulse width than the other would mean ones bigger than the other. I would think an actual flow test would have to be done to see the difference.
 

DuramaxPowered

Pushing my luck....
Jan 27, 2008
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that doesnt mean an injector opening is different in size?
How can it not mean that an LMM doesn't flow as much as an LBZ???

Same pressure(180MPA), same desired volume of fuel(120MM^3), and a larger pulsewidth to get that fuel doesn't mean that the LMM nozzles flow less than LBZ???
 

DuramaxPowered

Pushing my luck....
Jan 27, 2008
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thats what your commanding the injector to do. even if it was 1009893840938 times bigger.
I understand that, which is why I referenced a stock tune, not a modified one.......PW and rail pressure to deliver a certain volume of fuel on a stock tune "should" be accurate.
 

MMLMM

Tunergeek
Mar 2, 2008
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www.dyncal.com
I was getting at commanded pulse may be different for other tuning reasons vs. the opening size. I see what you are saying, but I wouldnt think it was safe to say they flow different based on the fact the tune has more or less pulse.

:confused:

so anyone have testing data of what the injectors actually flow for a generic number? I know the number is out there, should be common. anyone that hones a tip say theres 60% over ought to know what they started with lol.
 

Trippin

SoCal Diesel
Aug 10, 2006
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Bosch specs rate the LB7 at a different pressure than the rest. You need to flow them at the same pressure and pulse width in order to compare them accurately.

I don't have the info off the top of my head.
I'll check my notes tomorrow at the office and let you know.

Guy
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
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Bosch specs rate the LB7 at a different pressure than the rest. You need to flow them at the same pressure and pulse width in order to compare them accurately.

I don't have the info off the top of my head.
I'll check my notes tomorrow at the office and let you know.

Guy

Did you find anything in writing?