Corvette C8 Exhaust Module (AFM & NPP Modules) By Cicio Performance

Want to upgrade the exhaust on your C8 Corvette but that pesky CEL is stopping you? Rest assured because we came up with the solution for you!


*AFM modules are needed for almost every C8 Corvette going to any aftermarket exhaust. NPP modules are needed if your C8 came from the factory with the Valved Performance exhaust and the aftermarket exhaust you’re choosing is not a valved system*

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Corvette C8 Exhaust Module (AFM & NPP Modules)


After installing several aftermarket exhaust systems on various C8’s, we quickly discovered that even though a lot of the systems on the market have the valve actuator brackets for the main valves when the car goes from 4cyl to 8cyl operation, that there is still a check engine light that appears.

We realized that this eye sore would not be preferable to 99% of the owners out there so we set out to figure out a solution for this. Our exhaust module is a direct plug in item with very simple installation and will eliminate any check engine lights caused by the valve system on the factory exhaust!

Update** – AFM modules have been updated so instead of being one unit they are now two separate modules that perform the same function. So if you order an AFM module you will be receiving two modules and if you add the NPP modules you will receive four modules. Installation is still the same (found in the video below) and the only difference is that instead of plugging the AFM plugs to one module you will plug it into the separate AFM modules.

Installation & Explanation Video:



***Please note that due to current world events causing global shortages on materials and production that this product may be susceptible to longer than standard lead times. We do however realize that some people order a product because they need it immediately so if this is the case please contact us at 679-297-7770  or [email protected] before ordering so we can get you the most accurate lead time possible.


Our goal is to always under promise and over deliver, our customer service at the very top of the priority list.  Please feel free to contact us with any questions whatsoever!


Thank you for the opportunity to earn your business, we hope to be able to serve!


Thank you.

Cicio Performance