C8 AFM and NPP Simulators

Before ordering, you MUST read our FAQ page by clicking here.

1 order = 1 pair. If you need 2 pairs (see below), order quantity 2.

Got a check engine light from installing an aftermarket exhaust that doesn't have AFM (Air Fuel Management) simulators to trick the factory valves? This is the solution! These AFM valve simulators are plug and play with the factory valve harness and are easy to zip tie out of the way. Once plugged in, the C8’s ECU is none the wiser that it has an aftermarket cat-back exhaust attached and will not throw a CEL for AFM valve malfunction.

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

NOTE: If you have a factory base model exhaust, you will need 1 pair of simulators to avoid a CEL. If you have a factory performance model exhaust, you will need 2 pairs of simulators to avoid a CEL.