In-line: If the car is too noisy, it will lose its low twist.
S drum: After being unfolded twice, the S-bend is clearly visible in appearance. Its ingenious design can avoid the trouble that the exhaust pipe is too big to install. The horsepower of the modified S drum with good quality should be increased by more than 7%, and the exhaust sound is racing. But some low torque will be lost.
G drum: There are three kinds of expansion designs, which can increase horsepower with a larger expansion rate and minimize the loss of torque (the increase of horsepower is not as good as that of S drum, but the loss of torque is less, almost zero), and the sound is heavier.
H drum: It is specially used for high-end cars and sports cars. Because of their large exhaust capacity, only one exhaust drum (no middle drum design) is often designed, and its size should be designed according to the vehicle displacement. This introduction is rather general. I don't know how to use automatic transmission, and I don't introduce advantages and disadvantages. I hear the voice is charming.
M drum (changeable tail drum)
& lt First, let's learn what "back to pressure" is. Take REMUS, a world-class brand, as an example. It has its original design in the back pressure drum (the manufacturer should ask about the details of the specific patent). Simply put, it is to design a valve in the back pressure drum that can be automatically adjusted by air flow. When you are at low speed, the valve closes, providing enough back pressure to increase torque. Make the vehicle more powerful at low speed; With the increase of vehicle speed, the air flow gradually increases, and the valve gradually expands until it is fully expanded at high speed, so that the exhaust is completely smooth and the vehicle will run more smoothly and powerfully.
Banana: Also called exhaust branch pipe or exhaust manifold. Generally, the exhaust paths of four-cylinder civil vehicles with medium and small displacement are all combined into 1, and the poorly designed exhaust branch pipe will cause turbulence when the engine rotates at high speed. It will cause poor exhaust. When refitting, you can choose the 4-outlet and 2-inlet exhaust branch pipe of 1. Most of the exhaust branch pipes of the original car are cast by pig iron. If possible, you can customize the refitting supplies of high-temperature titanium alloy when refitting the exhaust branch pipe!