8 Injector high flow tumbler valve delete bodies/housing
High Horsepower demands a free flowing intake system that is unencumbered by the restrictive stock Tumbler Generating Valves.
The bolt on APS Tumbler Valve Delete Housing is a precision machined aluminium housing
that replaces the stock Subaru component (which mounts between the
cylinder head and the intake manifold/throttle body assembly) - and dramatically reduces the restriction between the throttle body and the inlet valves at high horsepower levels.