thanks for the info, never saw the disclaimer before, I've had these for a while.I looked up the part number on the Kook's website, it states that these are not for use on forced induction engines.
3" Competition Only Catalytic Converter 7" Long NOT FOR FORCED INDUCTION | Kooks Headers & Exhaust3" Competition Only High Flow Race Catalytic Converter. 3" I.D. Inlet and Outlet Headers are one of the top performance parts added to vehicles. Kooks Headers improves your vehicles exhaust performance instantly.kooksheaders.com