Are dual exhaust tips louder?

Dual exhaust will sound more characteristic and louder than single exhaust. It works better discharging gas from the engine with less backpressure, creating better rumbling sound in the process.

Do exhaust tips change horsepower?

In most cases, adding an exhaust tip will not increase your horsepower, but it can help make the car or truck sound a bit more robust. In some instances, you could see as much as 10 extra horsepower if the tips are added correctly. What is this? But in general, you won’t see a significant change in horsepower.