The one tuning company that knows GM cars and products is Lingenfelter, who have taken the Cadillac CTS-V to the next level. Based in Indiana, the tuners announced the latest package available for the whole series, including the sedan, station wagon, and coupe models. From the factory, the Caddy CTS-V comes with a supercharged 6.2-liter V8 producing 556 hp and 551 lb ft of torque. Lingenfelter comes to tune with a variety of custom mods such as ported LSA cylinder heads and a LPE GT9 ZR1 supercharger camshaft. After the dyno-tune you can see the output is more than 700 horsepower at the crank. Then, the experienced GM tuners tested a manual transmission CTS-V, and were able to accomplish 623 hp and 617 lb ft of torque to the rear wheels. Check out the video.