Using the speed of sound value calculated by the temperature and composition values of the exhaust gas flow, we can understand the time required for a pressure wave to travel the total length of the tube. To explain how stepped design improves flow and power range, let’s review what happens in the header. As the exhaust valve opens following the power stroke, a pressure wave and a mass of exhaust gas flows from the cylinder into the header primary.

Simply replacing your stock mufflers with Paradox mufflers is often enough to get a big boost of quality sound. Paradox goes above and beyond other performance mufflers because of their Patented Tuning Fork Technology. It’s why they have such high quality sound and highly effective "drone" control. 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. Also, note that you can achieve greater horsepower with a smaller diameter if you go with dual exhaust instead of single.

The noise difference is staggering between these two options, especially if you compare them both to your stock exhaust system. Furthermore, while this is entirely subjective, the sound of a cat-back exhaust when done right, is more subtle, quieter, and therefore easier to live with. You won’t annoy the neighborhood when you start up the car, and you’ll be able to hear your girlfriend talk in the passenger seat when cruising on the highway. Many states have laws along these lines, and you should probably pay close attention to them. However, most people don’t get stopped unless their car is insanely loud and bothers the neighborhood. A couple of thousand years went by, and Henry Ford dropped the Model T on the American people, so naturally, people started messing with the exhaust.

Most engines are built to run with a certain amount of internal pressureduring normal operation, so removing that pressure can throw off enginetiming and can decrease engine performance. Opinions are somewhat divided on whether or not using a straight pipeexhaust is good for your engine. You would need larger pipes to run to the mufflers, new mufflers, new pipes to go from the mufflers to the tailpipe, and new tailpipes. This happens because the swap will reduce your back pressure and strip some weight from your exhaust system. With less weight and a better flow, every gallon of fuel burnt can get you further.

But here are the most common vehicles that we see with straight pipe exhaust or muffler deletes. Because straight piping removes almost the entire exhaust system, whereas the muffler delete only removes the muffler, straight piping generally results in a louder car. Keep reading to learn more about the costs of straight piping a car.

It reduces the backpressure coming from the engine that enables the exhaust gases to pass freely