I went very over the top with mine and also put 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 would like idle Management. Excellent and fast support bought the JDM https://toyota-4age-engine-for-sa91233.laowaiblog.com/30566436/the-ultimate-guide-to-toyota-4a-ge