after much nagging by my wife since the day i bought this Skyline. Finally, i cant stand it anymore! i have to let go either my wife or the car. so cant be wife, so be the car...... .
i sourced out this from japanese webpage.the translation for the mod would be "full time secondary duct opening".from what i understand from reading it is the merit would be the torque feel from 2000-4000 rpm range...