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x3 e83, 2.0d 150cp, boost cut


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Salutare.

Un prieten a cumparat masina de mai sus, si cam face probleme. Din ce am vazut are catalizator scos si dpf. Problema este cu presiunea pe turbo, se incarca greu cam 2400rpm sa zicem, si apoi cand presiunea actuala depeseste pe cea specificata, scade foarte mult. Exemplu cere 2.6bari cand a ajuns la 2.7bari o reduce la 2.30bari si se repeta de cateva ori mai ales la viteze superioare, Am vazut in filmare ca a depasit cu putin peste 100mb specificat cand brusc a redus prea mult.

Cand masina trage se simt aceste fluctuatii.

Am demontat actuator turbo, intern este perfect, doar putin joc in pinionul melcat. Geometria lucreaza usor, lin. Egr este functional, si lucreaza.
Nu stiu la ce sa ma uit, ma gandeam ca nu e softul facut bine, aici nu ma bag.
Ce parere aveti?

boost.jpg

boost1.jpg

Edited by davidut
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