Shelby American is pushing the latest generation Shelby GT500SE supercar to new levels. As the first Carroll Shelby Signature Edition version for this model, the car delivers sizzling styling, razor sharp handling and an additional 40 horsepower. The 2024 Shelby Super Snake is the pinnacle of our performance cars based on Ford's next generation S650 Mustang sports car. Gases are pulled from the cylinder head by the exhaust manifold, at which point they are removed via the exhaust at the rear of the vehicle.
In California, it is illegal to select a catalytic converter for installation based solely on vehicle weight and engine size. The design of these systems often sees an increase in horsepower compared to the factory design of a vehicle. Because stock models try to minimise materials and maximise space, with horsepower as a lower priority.
By running pipes from the catalytic converter to the muffler and from the muffler to the exhaust tip, cat back exhaust systems improve exhaust gas flow, providing small performance boosts. However, your performance gains may be limited if your catalytic converter restricts gas flow, as a catback exhaust system is installed ‘downstream’ of the converter. Header-back systems are increasingly rare, namely because of modern emissions systems. Since removing your vehicle’s factory emissions components is highly illegal, the previous two options are more common. However, header-back systems are still available for some older, pre-emissions applications. In these cases, header-back systems offer more performance and volume than cat-back or axle-back systems