Car upgrading and refitting is not unfamiliar to car owners, but how to refit, where to refit generally, and what changes the performance of the vehicle after refitting in different positions. The Audi refitting store will answer the above questions one by one:

一、动力升级改装：

1、 Power upgrade and modification:

一般升级动力先从排气管入手，顺序是尾段、中尾段、全段。一般全段都换的话就要配合电脑程序一起升级了。当然，还有运动三元催化的升级。然后是进气系统，可以换成进气量更大“蘑菇头”。大厂的配件里还会有专车专用的进气导流配件。再有增加或更换中冷，增加油冷、泄压阀什么的。这都是简单的升级。如果有更高的要求，可以更换涡轮、扩缸等。

Generally, the upgrading power starts with the exhaust pipe, and the sequence is tail section, middle tail section and full section. Generally, if you change the whole section, you have to upgrade it together with the computer program. Of course, there is the upgrading of sports ternary catalysis. Then there is the air intake system, which can be replaced by a "mushroom head" with a larger air intake. There will also be special air intake and diversion accessories for special vehicles in the accessories of large manufacturers. Then add or replace intercooler, oil cooler and pressure relief valve. This is a simple upgrade. If there are higher requirements, the turbine and expansion cylinder can be replaced.

二、操控改装：

2、 Handling modification:

从简单的加装加强件，到升级稳定杆、轮毂、轮胎，再到更换避震、刹车等。

From simply adding reinforcements to upgrading stabilizer bars, wheels and tires, to replacing shock absorbers and brakes.

三、外观改装：

3、 Appearance modification:

各种拉花当然是长见的，还有全车改色，增加尾翼。

Of course, all kinds of lacquers are common, and the color of the whole car is changed and the tail wing is added.

四、.影音升级：

4、 . video upgrade:

简单的就是升级DVD导航，再到升级音响，加功放，加超低音，做造型、灯光之类。甚至可以加电瓶，升级发电机系统。

The simple thing is to upgrade the DVD navigation, then upgrade the audio, add power amplifier, add subwoofer, make modeling, lighting and so on. You can even add batteries and upgrade the generator system.

五、舒 适升级：

5、 Comfort upgrade:

升级避震也可以算到这个范畴，但是目前升级避震都是为了获得更好的过弯性能，也就是把避震调到比较硬，过弯性能会很好，但是舒 适性会降低。但也有些人是会在平时调到比较软，有比赛的时候再调硬。

Upgraded shock absorber can also be included in this category, but at present, the purpose of upgrading shock absorber is to obtain better bending performance, that is, adjust the shock absorber to be hard, the bending performance will be very good, but the comfort will be reduced. But some people will adjust it to be soft at ordinary times and hard when there is a game.