Has anyone ever heard of this company and it's products? It is a highly reputed Audi performance parts manufacturer and they have done many Porsche products in Europe. Any thoghts on their Porsche 996 Turbo upgrade to 530hp?

http://www.mtm-online.de/index_en.htm

 

seems like they offer their upgrade to x50 owners only. These guys are well known in the Audi tuning circles and it's the first time that I have heard that they tune Porsches..