If you run a PLM exhaust or other aftermarket exhaust on your Camaro or Corvette, you will need these AFM Valve Simulator to mount your factory valve motors in order to prevent a check engine light CEL. Simply remove the valve motors form the factory exhaust, and mount it onto our simulator mounting brackets, zip-tie and secure it to your car.
Comes complete set of 2. Easy installation with simple tools and this will solve the valve motor related check engine light error.