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True Flow Sealed Air Intake Systems are a unique departure from traditional air intake systems. The factory air box is left intact keeping the airflow cooler while protecting the filter from debris and moisture.  The factory filter is replaced with one of our foam, high flow, lifetime filters.  Finally we eliminate the factory air tube, which can have restrictive mufflers or resonators and replace them with our high flow, powder coated mandrel tubes and reinforced silicone couplers to maximize velocity.  Retains Factory Airbox: Keeps out hot engine air.  Gets cold air from

True Flow introduces its True Flow XDI Xtreme Duty air intakes for universal and vehicle specific late-model direct bolt-on applications. These new XDI air intake systems by true flow offer a solution to many heavy-duty trucks that suffer from undersized air-filter boxes that choke air flow to minimal engine requirements. True Flow replaces the factory air box and restrictive factory plastic tube to increase air flow. The True Flow XDI, constructed from powder-coated aluminum with direct bolt-on applications including powder-coated mandrel-bent tube and nylon-reinforced silicone couplers. By