This system does NOT include AFM or NPP valves. It is intended for vehicles that are either NOT equipped with AFM and NPP or have the AFM and NPP disabled. System has non-functioning mounts where AFM actuators can be mounted if the vehicle had them. A Check Engine Light will occur on vehicles equipped with AFM. This system features the aggressive ATAK(r) sound and a durable high-temperature ceramic matte black finish on 4.25" T-304 stainless steel tips. Borla(r) Cat-Back(tm) & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla(r) Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium, high-quality T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum flow & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, Borla(r) stands behind every system with a Million-Mile Warranty. Just what you'd expect from the world's most experienced (and most winning) exhaust brand.