That is, simple modification, medium modification, and deep modification.
Refitting the air intake system is a common method of simple refitting. For example, adding a secondary air intake system can make the air intake of the car more smooth, thus improving the power of the car. In addition, the riders will also install ground wires and use professional spark plugs and live wires. The author would like to remind you that you must not disturb the original vehicle route when installing ground wires. Car users who have some requirements for power modification but don't need too much power will generally choose to find a professional shop to modify the whole exhaust mechanism of the head banana, middle section and tail throat according to the body design, which can meet the moderate requirements for power modification.
