LPM vs HP vs % Over Stock Nozzle Question

[LBZ]

I know this has been talked about but for some reason I can't find any discussions on it.
So straight up what do these different numbers mean in relation to each other?
Some companies go by HP, some go by % over stock and some go by LPM.

So for instance if I say want 50% over stock Exergy nozzles which HP and LPM rating does this equate to?

50% makes sense to me - I know what I am getting there, second would be LPM which is also a given value as to how much larger it is but the HP has me baffled as to why companies would use this as my tuning determines my HP right? Unless I just threw nozzles/injectors at it with no other changes and used this as my hp increase which seems like kind of a 12 valve hillbilly measurement to me.

 

[Dirtymaxx03]

Not sure what LBZ injectors flows. I think a stock lb7 injector flows 18lpm. So a 50% over would be 27lpm. As far as the HP number I have heard a lot of different opinions. But I think a 250HP injector is something like 100% over? I'm pretty dang sure the HP ratings came from the dinosaur mechanical hillbilly hauler days.

 

[PACougar]

The HP rating is a simple BS marketing scam. No big surprise II always loved to do it. I think you'd have to ask each company that goes by HP how big the injectors really are because it's subjective and they can all be different. I know it's listed somewhere, but I can't remember the stock LPM for the various models.

 

[Hot COCOAL]

http://www.duramaxdiesels.com/forum/showthread.php?t=20344&page=2

http://www.duramaxdiesels.com/forum/showthread.php?t=28825
here's a couple threads that have some info on LPM/mm3

I think the HP ratings were more for the Dodge guys who were stuck without really much of, if any tuning options, back in the late 90's and early 2000's. the numbers were derived from just slapping them on and running on the dyno. Same goes for what DDP used to do with 50 75 and 100 overs but they've upped the science in their game over the last couple years although you can still walk in and get 50 and 75hp tips...

IIRC, I think I was told the LBZ's were 22-24lpm???
But I suppose it all depends on who's doing the test and how?? It was pointed out by Guy in the first link I provided above where they were comparing injector sizes/flow, that the injectors need to be flowed at the same pressure and pulse/duration to get an apples to apples comparison...

For example, the LBZ nozzle has 1 more hole than an LMM and they both have the same size hole, yet the LMM injector is said to flow more (in stock trim) cuz the tuning is different...or something like that
:angel:

 

[OregonDMAX]

which seems like kind of a 12 valve hillbilly measurement to me.

I'm no help I can't stop laughing at this :roflmao: funny because it's true.

 

[snowman]

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