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Ok only inj #8 now it's clear but it changes nothing.... Cyl8 is one of the "less contributor" in your test in post #1

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You sure values are microseconds? I don't remember what those are on N63 smoothness, but on other engines they usually are corrections to fuel quantity injected so that smooth running would be achieved. Less compression = needs more fuel to achieve same burn impulse.

Maybe yes, is the same shitty injection that uses n43 and n53, injectors, pump and coils are the same  and with the same incomprehensible parameters 

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