AS performance tubular manifold for Fiesta ST 180AS performance tubular manifold for Fiesta ST 180. Perfect for fast road or race. Best performance when used with stage 3 Fiestas. The tubular manifold for the Fiesta ST 180 will see best performance gains when used with a stage 3 setup, hybrid or big turbo setups will see the best improvements. Stage 1 cars A standard manifold on a Stage 1 Fiesta will perform perfectly, an upgraded manifold on a stage 1 car will see faster turbo spool but will not