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  1. GIAC "X" Chip N75S smoothing software?

    Volkswagen Passat B5 Discussion
    I got my X chip for the passat back in 2003 and wanted to know if there were upgrades made to the programing since then and how much does GIAC charge for the upgrades? Also I have an upgraded N75 valve so Im not even sure the smoothing software would make any difference. Those with the same...