Paragon Performance C8 Corvette AFM & NPP Exhaust Valve Simulators

Stop check engine lights on your C8 Corvette with our Paragon Performance AFM & NPP Exhaust Valve Simulators. Installing an aftermarket exhaust that doesn't retain your factory valves will trigger a CEL — these direct plug-and-play simulators solve that by fooling the computer system into thinking the valves are still in place.

*Note: We know the factory valves use a 4/5 pin connector. Our simulators only need 3 connection pins to perform the same function and prevent the CEL. No need to overthink it.

Updated 2022 Design — installation works the same way, but you'll now receive 4 connectors instead of 3 (as shown in older videos).

*Note: These simulators will not disable AFM 4-cylinder mode. They only prevent the check engine light triggered by exhaust valves no longer being retained after an aftermarket exhaust install.

Features & FAQ

Which option do I need for my car?
AFM and NPP simulators are identical — the only difference is how many you need.

• AFM only = 2 simulators
• AFM and NPP = 4 simulators
• Stingray base: AFM only
• Stingray with factory performance exhaust: AFM and NPP
• E-Ray: AFM and NPP
• Z06: AFM only
• ZR1: AFM only