Adjusting Tein Set Up
 

How??

Ok, i got Tein coilovers and i want to raise the front up 20mm..

How exactly do I do it?

(fyi... I have the camber adjustment type)

This is very simple job for any mechanic so my advice is to go that way. But, if you want job done well, better ask for one who knows something about this. Why just front?

front is lower than the rear

Have you looked on the Tein website to get the measurements as the front does sit slightly lower.
Here is the link
http://www.tein.co.uk/product/index.html

On my bugeye the front is 15mm lower than the rear.