V3 Black Top Feed TGV Housings

The IAG Performance V3 Top Feed TGV (Tumble Generator Valve) Housings are a fully redesigned upgrade for Subaru intake manifolds, engineered to improve airflow and maintain OEM emissions compatibility. These housings feature new port shapes that increase efficiency, delivering up to 5 WHP over IAG V2 TGV housings and 13 WHP over stock housings. Constructed from CNC-machined 6061 aircraft-grade aluminum, these housings are designed to accommodate popular aftermarket and stock injectors, and feature an innovative design that works with multiple upper manifold bolt patterns. Custom injection-molded fittings allow for the installation of OEM motors, shafts, and butterfly valves. These TGV housings are suitable for both stock and performance builds, offering noticeable power gains while preserving OEM functionality. They also provide additional clearance for larger inlet turbochargers. While they maintain OEM emissions compatibility and do not require a custom tune when installed alone, professional tuning is recommended when combined with other modifications for optimal results. Included in the package are two TGV housings, a hardware bag, and four injection-molded housing adapters. Please note that OEM emissions components are not included and must be re-used from the original parts. These housings are compatible only with a single combined motor/sensor assembly and are not compatible with separate sensor/motor assemblies found in older Subarus or with fuel line kits that require the removal of OEM TGV motors/sensors.