A SECRET WEAPON FOR 4AGE ENGINE SALE

Pictured are the head facet of The 2 manifolds, the bottom manifold being the Blacktop, see how it has four extra bleed factors for your air into a common chamber.4a. I might state that it is most likely prosperous at idle since the further air leaking thru the throttles is dropping the manifold vacuum and the ECU is introducing extra gasoline. I d