When it comes to performance sedans, the Cadillac CTS-V has about the most amount of power and performance features you can find for a reasonable price. But like every car, there is always room for improvements, especially if you’re the type of gearhead that has a bit larger need for speed than some. That’s where tuning companies like D3 come in, creating monsters out of the already potent Cadillacs. Lucky for DRIVE, the automotive YouTube network got a hold of one of these D3 cars for their Tuned segment this week and just hearing the car is enough to make your head spin. Check it out above.

This CTS-V prepared by D3 may look rather stock, however the power being produced under the hood is anything but.

The brand new Cadillac CTS-V is rated at just over 550hp, but that’s nothing compared to the D3 CTS-V. This particular car produces right around 750hp to the crank, or 650hp to the rear wheels, and 640ft.-lbs. of torque to the pavement.

This is accomplished through D3’s Stage 4 power upgrade, a performance upgrade package that focuses not only on more power, but better breathability, handling and overall performance.

The Stage 4 power upgrade features an all new intake and throttle body, a bigger fuel pump and injectors, and a smaller pulley on the supercharger for more boost. A spacer is also added to the supercharger to reduce strain on the blower and give it more displacement. To keep the modified supercharger cool, D3 uses a massive intercooler that holds about 1.6 gallons of fluid, which is pumped through the system at a rate of 20 gallons per minute. A 3-inch Corsa exhaust with x pipe and long tube headers also helps unleash a little more power.

Added power means the need for added control, especially when it comes to racing in the Cadillac Challenge Series like this car does. So D3 equipped the car with Brembo 2-piece floating calipers up front and upgraded the brakes even more with cross-drilled and vented two-piece discs for better braking power. Better handling comes compliments of a KW Variant 3 coil-over setup and sticky 295 series tires on all four corners.

With the Stage 4 performance upgrade, D3 supports the CTS-V's added power with better air flow to the engine for even better performance.

While front man Matt Farah can be seen giggling like a schoolgirl at the D3 CTS-V’s power in the latest episode of Tuned, he’s not so keen on the automatic transmission and lower ride height.

In the car’s defense, it’s also used as a daily driver in Los Angeles and looks rather sleek tucked to the ground, but the car does lose some functionality on the road and some fun with those features.

It may not be for everyone and we’re sure we could find features we don’t like about the car, but the throaty exhaust note, pure power and sleek elegance are all enough to look past the less than optimal transmission or questionable carbon fiber additions. If someone handed you the keys to this car, wouldn’t you take it?