Subaru Legacy Intake Manifold Runner Control Replacement at your home or office.

What is the Intake Manifold Runner Control all about?

Your engine needs air in order to combust fuel, and varying amounts depending on the speed and driving condition. Older cars relied on nothing more than a basic air intake that pulled fresh air in through the filter and delivered it to the intake manifold. However, newer cars have the means of adjusting the flow of air through the intake in relation to driving conditions. These vehicles are equipped with intake manifold runner control modules, which are vacuum solenoids that operate a butterfly valve in the intake. During slower driving when the need for air is less, the butterfly stays closed. However, in aggressive driving situations, the butterfly opens and increases the amount of air sent to the intake. The computer compensates for this by adjusting the fuel mixture, and the result is an increase in performance.