AMS Performance Intake ManifoldHere it is! Introducing the AMS Performance Subaru EJ WRX STI Intake Manifold. The manifold was designed with performance and big HP custom setups in mind. With the level of builds this manifold will be used in, there will be some customizing required. Get yours today! The AMS Subaru Intake Manifold was designed to outperform the competition. We referenced many modern design examples and engineering studies to bring you the best intake manifold