Hi and welcome to our Forum. I don´t think that you conversating in English should be a problem for us but please do avoid putting numerous different questions in one post. This specific fora deals with Engine and e.g Engine Management Systems but regarding Lowering and Tinting you would be better off by posting a separate question in our Styling Fora.
Back to your statement "no power", do you refer to 150BHp beeing "no power" or are you having some kind of problem/fault with your engine that you need sorted out.
BR
Göran
Forum Mod
I have nothing but confidence in you. And very little of that.
(Groucho Marx).
Åker numera Audi A6 -08 4.2FSI