Does anyone have a recommendation for plugging the holes in the exhaust manifold once the air injection system is removed? The rest of the air injection system was removed, but the manifold remains, and is currently just capped off where the hose connected to it at the back of the valve cover. I'd like to remove it without destroying it, if possible.
Remove the injector tubes, then cap the holes with brass plugs. I would also keep all the injection stuff you pull off. This allows you to remove the plugs and re-install the equipment if you decide to sell it or if for some reason the environazi's catch up with you.