I went very over the top with mine as well as place huge barbs in so I created an idle bypass pipe so I could bleed air previous throttle butterflys if I necessary to. not a needed phase but I need idle Manage. Re: ITB Conversion on 16 valve 4AGE https://4age-blacktop-engine-for48012.pointblog.net/helping-the-others-realize-the-advantages-of-4age-engine-sale-73671688