[ZLRob]

These coolant manifolds are just replacements for the OE manifold. If your blower has been ported by Kong and you are still running the OEM manifold you are not taking full advantage of the increased coolant flow that their ported passages offer. This manifold directly replaces the OEM one and is opened up to match the flow that the ported passages offer. Nothing more, nothing less. You could still run one in stock configuration, but you'll likely get nothing additional from them outside of anodized CNC bling factor, which will lose its dark black coloring in time anyway and turn to a dingy black with brownish coloring to it because that's the way anodized coloring fades over time.