mountune Lower Intercooler Pipe Upgrade and Recirculation Valve, Focus ST 2013-18

2363-HP-AB

The original recirculation valve features a rubber diaphragm that does not function effectively when the pressure differential across the turbocharger compressor housing is increased above the original operating conditions. This can cause the valve to open prematurely leading to possible turbocharger damage due to increased turbo shaft speed. mountune engineers designed a new, more robust valve that features a metal piston and rubber sealing system . The new design also features an uprated spring that improves sealing pressure. This allows the valve to remain closed under high pressure conditions. The mountune valve is also serviceable if needed. Also included is our Lower Intercooler Pipe Upgrade featuring a massive 39% increase in airflow. Both items are easily installed and improve turbocharger response and performance.