What are the pros and cons of straight-through headers?

[LaAvery]

Straight-through headers can affect a car's power in both directions, as detailed below: Advantages of straight-through headers: Exhaust modifications come in various forms. Many exhaust modifications are done just to achieve a pleasant sound, while more professional ones involve adjusting the exhaust to better match engine modifications, allowing the engine to perform more explosively. The header is the part directly connected to the engine's exhaust. Modifications here often involve upgrading the entire exhaust system to increase diameter. Switching to straight-through headers, paired with high-flow air intake, makes exhaust emissions and acceleration smoother, significantly enhancing power, with noticeable effects. Disadvantages of straight-through headers: If not done properly, it can negatively impact the car's power instead of providing benefits. Moreover, straight-through exhaust emissions may fail to meet standards. Modified straight-through exhaust pipes typically result in weaker low-end torque, increased noise, and excessively loud volume. Untreated exhaust emissions exceed limits, causing severe pollution. The foul odor can seep into the car, and fuel consumption may increase.