Pictured are the head side of The 2 manifolds, The underside manifold getting the Blacktop, see how it has 4 more bleed points to the air into a standard chamber. The engine's AFR appears regular at cruise, but abundant at idle, plus the stinky scent tends to make experience sick https://4a-ge-engine-for-sale14814.blogstival.com/56400939/detailed-notes-on-jdm-toyota-4a-ge