Earlier this year we developed a new cast downpipe for these turbocharger systems, which may interest you. The new cast downpipe is now available for purchase for those interested in updating their system to the latest specifications. The new design offers a smoother flow path for exhaust gasses exiting the turbo, with several advances in terms of quality, fitment and more. The system is cast from 304 stainless steel, with a high quality, low profile flex section, thick billet bracket, integrated o2 bung and bracket, and beautiful argon-back-purged TIG welding. The system also includes a new replacement gasket and nuts.