If u ask for the meaning of these maps.
1. Pump voltage should be the right name. Edc15 as ur alh engine has the vp37 injection pump. Over the pump voltage the fueling is regulated.
2. Drivers decide should be drivers wish map. The fueling target u wish with your throttle in mg/stroke.
Limitations u have with Diesel engine is basically fueling. You need an amount of time to inject a amount of fuel. The more your rpm is the less your window for injection left.


Basically Diesel engines don't really have knock. Lean and rich is also no harm to the engine. It's more about having smoke or don't having.
In Diesel engines power depends on how much fuel u get into the engine at the right time.
And if u keep afr at about 15.5 (if I don't lie at this point) you should see no smoke.

For a stage 1 remap there isn't a lot of stuff to change. Basically there are three maps to change.
Drivers wish (should be high enough already)
Torque map (could use some tune normally)
Smoke map (where the stage 1 remap basically happens)
You can say that out of these maps ur fueling will be decided. Smoke map is on stock almost always the limit. And the decision is made by looking on the lowest value out of these 3 maps.

But be careful the more fuel you want to inject the more time for that injection is necessary. It is mostly measured in crankshaft rotation.
The amount on time in crankshaft rotation depends on 3 values.
1.amount of fuel together with how large ur injectors are.
2.start of injection (there are about 5 maps for different conditions)
3.rpm (if u want to inject e.g. 20mg/stroke at 2000rpm ur injectors take let's say 10degree of CR . As ur rpm rises ur speed of ur crankshaft rises. At 4000rpm it will then take 20degree of CR to inject the same amount of fuel) that's just a roughly explanation.

The problem in too long injection timing based on CR is that if u go far behind of let's say 20 degree after top dead center with your end of injection (start of injection + time of injection)
Your egt will rise to unhealthy conditions.

the next problem is the boost map. Your engine runs a vtg turbo. If u inject more fuel u get mor exhaust gas to spool the turbo. This has to be compensated through n75map and  the boost map. Otherwise it will be too much.

In fact diesel engine are EGT limited.

Ad 3. Smoke map is a fueling limiter. It does limit fuel so you will not see excessive smoke - you can think of it as a AFR map (airmass divided by fuel quantity is just AFR).

Ad 1./2. You just inject as much as you can use without smoke. Do not think about time - to simplify when you are trying to inject too much you will find smoke. To some extent you can fight smoke using injection timing but too much advance is also bad.

You should use lowest possible boost to burn desired quantity of fuel. The problems with boost are same in petrol and diesel engines - you should use turbocharger compressor map to find maximum possible boost level.
Ad 3. You can log MAF readings to find airmass.

Boost is a measure of restriction. You can't apply anything you think you know about gasoline engines here.

1: I should shoot for 20:1 afr?
2: explanation was a bit confusing but what I understood is your looking when fueling is being shot in=Timing=crank degrees. How do i use this information?
3: overall what i think I'm understanding is when you inject more fuel you need more time to inject that amount in so you start the injection time earlier. Injecting more fuel makes more heat= boost, now boost is controlled by n75. So with more fuel comes more boost in a way which are we using boost to keep the afr in spec with smoke map?
Yes this moght all be wrong but through failing success with derive. Stay with me guys!

Then you don't know anything.

so BTT:
1: stock ecu is shooting very lean like 22-19:1, you should shoot for about 15:1, just go richer till you see smoke. how much smoke is oke for you u have to decide on your own.
2.there is a problem if injection timing is too long. a lot of fuel will then be burned while the piston is going down -> will generate lot of smoke and heat but very low power gain. to know how long your injection is and how much after top dead center you calculate, Start of Injection + time of injection = End of injection. e.g. -11°SOI (negative because BTDC) +20°=9°ATDC EOI.
3. At first, you can make your engine inject earlier. The problem is in going to early. A lot of the energy through burning the fuel will then work against the up going piston -> you will loose a lot of power.
More Fuel = More boost, thats correct. Boost controlled by n75 also correct.
What you will expirience if u add fuel without modding the boost map or the n75 is that you will have very high aggressive boost peaks on low rpm. this results in edc15 taking fuel out of the running engine to get the boost back under control -> less power again, or u will have the emergency modus on. Also spooling the turbo up too fast will harm the turbo.

"So with more fuel comes more boost in a way which are we using boost to keep the afr in spec with smoke map?" sry but i dont understand the question