When you think about tuning a car, a lot of things come into your mind. All of them offering an expression of your personality. Whether the category of tuning that you're thinking about is aesthetics or performance.
Performance tuning involves two categories;
1. Engine fittings for power production.
2. Weight distribution and vehicle handling.
On the other hand, there is the aesthetics tuning that involves altering the vehicle's appearance. This creates a first impression.
Read more about it here
https://infomeabout.com/vw-golf-models-modification-features-and-parts/