I went really over the top with mine as well as put substantial barbs in so I built an idle bypass pipe so I could bleed air earlier throttle butterflys if I necessary to. not a needed step but I want idle Regulate. – Throttle locating dowels: Just like OEM https://toyota4age58023.ampblogs.com/5-essential-elements-for-4age-20v-turbo-engine-for-sale-68147045