Exhaust and straight-through muffler, i.e. more noise and smoke, but more power? What is its diameter?

The direct-flow exhaust system is a well-known solution for tuning enthusiasts, designed to get rid of exhaust gases faster. Why are these changes made? Improved gas flows improve the smoothness of the engine, which is more alive, revs better and has more power. His sound also changes. What is a straight-through muffler and can you make it yourself? Find out if such changes are really useful!

How is a direct flow exhaust system arranged?

A traditional exhaust system typically includes:

• exhaust manifold;
• catalyst(y);
• faders (initial, middle, final);
• pipes connecting all elements.

What does flying really mean? It is necessary to increase the diameter of all exhaust sections, remove the noise insulation in the mufflers or remove them altogether, and install the so-called. drainpipe.

Ways through exhaust in the car

What are the next steps? The first is catback, i.e. full series until the catalyst occurs. Improvements consist in increasing the diameter of the flows and replacing the mufflers. Another way of tuning (this work can usually be done in a home garage) is the rear axle. If that's your choice, you'll get rid of the stock muffler and replace it with a straight-through muffler. The last option is the aforementioned downpipe. It replaces the catalyst, and itself has the form of a pipe, as a rule, with an increased cross section.

Silencer middle entrance - what does it give?

Exhaust modification will change the sound of the car at different engine speeds. Some like a very metallic sound, while others want a bass low tone. To do this, create a middle passage silencer. In unmodified vehicles, this element dampens vibrations due to the sound insulation it contains. If you replace the standard elements and decide muffler through, you win first on sound. However, this is too small a change to achieve higher power.

What will give you through mufflers?

You can independently disassemble all the mufflers in the car and remove sound insulation from them, and then weld them back. What effects will you achieve in this way? The sound of the car itself will definitely change. It will probably become more bass and, above all, louder. This procedure will also increase the audibility of the turbocharger if one is installed in the engine. You already know how to make a straight-through muffler, but what about the rest of the exhaust?

How to make a full flow exhaust? How to achieve the best effect?

Here the matter is no longer so simple. You will need a lot of space. Products such as:

• jack or large channel;
• welder;
• Bender;
• material (stainless steel).

However, when working with direct-flow exhaust, knowledge is required in the first place. Why? Exhaust cannot be designed by eye. The flow of exhaust gases in each engine is controlled by a team of engineers who calculate not only the diameter of the pipes, but also the optimal path for the exhaust gases. So is it possible to be as accurate on your own?

Exhaust and straight-through muffler - self-contained design

The key to maintaining optimum engine operating conditions is the correct exhaust path. We are talking about the least perturbed flow, but the diameter of the pipes that make up the exhaust is also important. The size of the entire system and each through silencer should not be arbitrary. That's why you need to make sure you know what you're doing. Creating an entire exhaust system is not easy. You must:

•  lay out the connectors;
•  create silencers;
•  weld hangers and arrange them;
• Position the pieces so that they fit into the floor slab.

Does a direct flow exhaust system give you a power boost?

A through muffler and exhaust will give more power, but in certain situations. Such car modifications most often consist not only in changing the exhaust, but also in tuning the engine. You can "clean" the engine a little, especially if it has been previously modified. As the exhaust gas flow rate changes and the space in the exhaust increases, the engine begins to “breathe” better. The vacuum of the exhaust gases, which are not drawn in as much, is reduced, which contributes to a better ignition plumage. Flying solo might give you some power, but you'll get more with more customization.

To fly or not to fly?

If you plan to change only the engine map without mechanical changes, then the exhaust and muffler can be omitted. The costs will be disproportionate to the benefits. What about bigger changes? The flight makes sense mainly when changing the turbine to a larger one. Then in the upper speed range you can get the maximum boost pressure. Therefore, for larger modifications, flight is mandatory.

As you can see, a straight-through muffler is a fairly common modification, which, however, requires knowledge and accuracy. Whether you decide to tweak or not depends primarily on what effects you want to achieve. If you care about sound, you can try changes with almost every device. However, if you are looking for more power, you should first check if it will be beneficial for you.