I went pretty over the top with mine in addition to put large barbs in so I produced an idle bypass pipe so I could bleed air past throttle butterflys if I necessary to. not a required stage but I need idle Manage. When it comes to general performance almost https://daltoneilkz.bloggerswise.com/38301637/indicators-on-4age-20v-turbo-engine-for-sale-you-should-know