Actually the intake is ceramicoated.And the valve covers are powdercoated.All of the valve covers have those little bumbs.Like Geno said it is casting flash.If someone wanted they could take half a day and sand them all off.But they still look great.ASk any one that has seen my car at Carlisle.
To get that specific look there is actually two different layers on there.One base coat and then a pearlescent blue over the top.