wow...you are confused in a number of areas...no problem...
The kg/m is kilograms per minute, a measure of rate. using a viscous fluid measuring (ONLY) the nozzle flow characteristics (at low, low pressures)
The lpm is also a unit of rate, liters of air per minute...again, at low pressure, compared to what HEUI
inj's are capable of. But again, this is measured with the nozzle separated from the injector...so they are "flowing" JUST the nozzle. How much air, or fluid the nozzle can allow to pass, or flow in a MINUTE. HEUI
injectors operate in thousanths of a second.
The nozzle is about the LEAST important component in a HEUI
The "cc's" is a measure of VOLUME, cubic centimeters, or 1000 cubic millimeters...this "cc" value is given, typically as a maximum value for an injector.
Say, a "200cc" injector might flow 200mm's (cubic millimeters) in one shot...which is typically standardized as "200cc's" in 1000 firings. The RATE of that injector is usually not advertised. One company's 200cc injector might take 4ms (four one thousandths of a second) to fully empty, again in 1000 shots...
another company's 200cc injector might take 2ms (in 1000shots), this injector is much "quicker" than the other injector...meaning that it moves it's MAXIMUM "load" in half the time...but they are still BOTH 200cc (maximum displacement per 1000 shots).
Some companies don't rate their nozzle (not full injector!) in rate, but it % over stock.
an "80%" nozzle should flow 80% MORE fuel than a stock nozzle
a 100% nozzle should flow 100% MORE than a stock nozzle, etc...
you could take a bone stock injector, say a stock "AD" injector (~150mm^3 maximum displacement)...with a stock nozzle
that injector, a stock "AD" might need 5ms of "on time" to empty it's full 150cc's in 1000 shots.
put an "100%" larger nozzle on it (double stock), and guess what...it STILL only flows 150cc's in 1000 shots...but it might only NEED to be turned on for 2ms duration. The injector didn't flow ANY MORE fuel...it just flowed the same amount of fuel more quickly (higher rate!).
now, on the other end of the spectrum...I can build a 500cc injector, and put a stock nozzle on it.
guess what...if I fire that injector 1000 times...it might only flow 150cc's in 4ms...but, if I extend the PULSEWIDTH to 5, 6 or 7ms...then, it will start flowing it's full (500cc) potential...this would be a slooooow "500cc" injector, and not very useful.
I'll stop there, and see how many folks got in front of me...