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Showing results for tags 'VGIS'.
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Wish to know more how (mechanically) the VGIS works. From the pic, the big red should be the whole VGIS system . Wish to know where is in or out.. Wish to ask.. the VGIS control is by air going through the black vacuum (on left) 1st from the intake mannifold or going throught the pump (gold dumdbell thing with a piston circled green) controlled by the seloniod at the vaccum? How would the small black vacuum be important... i realise if i push the piston, air will "leak" from the soleniod from the vacuum..
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Calling all Chevy drivers, Anyone felt the effect of the VGIS kicking in ? I thought it should kick in at speed of about 140km/h.. but never felt anything..
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Everyone, I am trying to obtain more information about the Ecotec II engine and VGIS (like to know more about my, Chevy Optra), but don't seems to be able to find any useful info. Can someone please guide me to right place? Any URLs? Thanks in advance.