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vafc

  1. Engine Tunes/Mods
    Ok so my question is ," Is there an aftermarket variable valve timing controller" available for the 4.2 i6? I was told by several GM techs that a vafc will do the trick.... As well as greddy "e-manage"/..... I know that alot of the vvt cars severly benefit from a controller,,,,, One of my...
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