The factory system is incredibly complex & expensive, reverting to normal exhaust between 30 & 40MPH IIRC to comply with EU restrictions. I developed a solid state relay board to take the 996 PSE switch inputs & output 12V to an aftermarket vacuum solenoid which controls the valves. That way I decide when it's open.
Valved exhaust on 986.1 S with a sports exhaust button
in 986
Posted
The factory system is incredibly complex & expensive, reverting to normal exhaust between 30 & 40MPH IIRC to comply with EU restrictions. I developed a solid state relay board to take the 996 PSE switch inputs & output 12V to an aftermarket vacuum solenoid which controls the valves. That way I decide when it's open.