Generally, exhaust gases are divided into three categories:
In-line-increases horsepower at high speed. The torsion at middle and low speed is not satisfactory, which is more suitable for running high speed and track for a long time. The sound is about100 db% 26lt; Noise, environmental pollution% 26gt
S drum-improve the torque at medium and low speed. Fast start, strong climb and low sound (about 90 dB). It will not sacrifice the horsepower at high speed, but mainly prolong the formation of exhaust gas to improve the power.
(Disadvantages: there is * * * vibration at high speed, which does not greatly improve the horsepower at high speed) (used for engines with displacement below 2.0)
M drum-specially designed according to the characteristics of your own car. There is no noise and no * * vibration in the middle and low speed lifting torque (the sound is similar to the S drum, and some models cannot install the S drum).
As for Yue Ling, for a car with a displacement of 1.5. S drum and M drum are more suitable. In addition, you often run long distances. Although the sound of direct row is good, the vibration of * * * is inevitable. In addition, for low torque, the loss is large. So it is not recommended.
Hope to adopt ...