O.K., now I see and I understand. You are not speaking of the throttle of ClioII 1.6 (because you wrote "this is a modernized motor from clio 2 1.6"), you speak of the throttle of MéganeII 1.6, or ClioIII 1.6. That´s clear, they are not compatible and you need the ECU from MéganeII. But I still do not know, why you installed the throttle of Megane 1.6 as it is smaller (58mm vs. 56mm, see the catalogue
https://www.vdo.de/media/183774/flc_engi ... ors_de.pdf page 36 and page 41). There is maybe a mountig issue, but with your skills in machining adapters that shouldn´t be a big deal, to use the 1.4 throttle.
So to finally clarify, do you have now the old 1.6 16v without inlet cam phaser (ClioII / MéganeI) in you Mégane, or the new one with inlet cam phaser (MéganeII, Clio III)??