Exhaust Valve Controller Kit Optimizer 100% of the exhaust is

100% of the exhaust is channeled through smaller diameter piping before entering the expansion chamber of our center muffler bypass

then you bet we've put it to the test on our own cars

INCONEL 625L stainless steel properties:

fits OEM Porsche 718 Boxster / Cayman / S airbox for improved airflow and performance

This is a mild increase in overall volume over stock

Exhaust Valve Controller Kit Optimizer 100% of the exhaust isTwo key fobs are included to control the valves. They can also be paired with the HomeLink buttons for remote operation at the press of a button. Allows you to force the valves open for a glorious sound at all times. From the factory the car can shut the valves based on operating parameters which can not only be unideal, but when running an aftermarket center muffler exhaust, can be much more pronounced and undesirable. Allows you to close the valves