2016 D3 Cadillac CTS-V w/American Racing Headers

D3 Cadillac recently teamed up with American Racing Headers to test out their newest creation for the 2016+ Cadillac CTS-V. This already potent hot rod Cadillac packs 640HP in stock trim using the vaunted LT4 engine. The guys at ARH created a 1-3/4” primary long tube header system with high flow cats matted to the OEM muffler system. The results on 91 pump gas was +34HP & 46TQ without any tuning done