Because any change to original spec is technically ilegal.
This means any change to suspension or engine if the police sees it they give you a fine and apprehend your cars documents, to get them back you need to go through a very strict inspection. And I aready have a different engine than original so It's better to keep a low profile since the engines are preety similar appearance wise.
If you want to have changes legal you need an engeneer to make a project and put all the changes in the cars documents.
Hopefully I can do this when I get my Masters Degree. but until then its not worth it since the fine is half of what I paid for the car in the first place, and I wouldn't whant to buy another one.
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