This system does NOT include AFM or NPP valves. It is intended for vehicles that are either NOT equipped with AFM and NPP or has 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. System features polished T-304 stainless steel tips. Borla Cat-Back & Axle-Back exhaust systems feature patented straight-through and multi-core technology designed to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive Borla Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium, high-quality T-304 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-controlled CNC manufacturing ensures an accurate fit. Best of all, Borla 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.