Hmm,
calibration is for want of a better description is the "flow",
coding is this information marked on the injector so when it's fitted the PCM/ECU can have this information entered in to it to adjust it's fueling charecteristics for the "new" injector.
At this point it get a lot more technical.
Fitting a S/H injector to 1 cyl and it "may" self calibrate.
Some engines can do this for up to 2 replacement injectors.
As for "making" up an injector where's the point?
The parts your suggesting replacing are the very parts that need the calibration/codeing.
Just fit a S/H unit.
Besides which these thing run at times at thousands of bar,
1 bar = 14.5 psi.
Thats a hell of a lot of psi's!!
Hell even at idle speed they run at 200 bar,
Now I don't now this for a fact but suspect that'd be more than enough to cut through the flesh of say an arm!!
Don't want to find out.
My local diesel injection specialist runs his tests behind what looks like 10mm plexi in a sealed cabinet.
Fit a S/H one and see from there.
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