Modifying the car is far from just wanting the car to be faster . 

For example one of the most common mod , is changing the disks . This does not make anyone faster , not make the car brake better, but it makes the disks to last much longer and so not to have to worry about getting cracked disks and having to change them so often , 

Different brake pads will  improve the braking , making it sharper and stronger . This is very appreciated on the track .

making a specific alignment will improve the cars handling on the track , and probably deteriote it on the street ;-)  , driving on track and feeling that your car is sharper makes the whole driving experience better . 

And at the end you might be a little bit faster, but , as said, that is very often not the primary goal .

Another think about modifying is the is so enjoyable to do it , just for the sake of doing it . A real pleasure and lots to talk about around the car parks and dinner table  indecision


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 964 Carrera 4 --  997.2 C2S , -20mm -- 991.2 GT3 RS