BMW and Porsche tuners are rip offs but they no that fools will pay that much, so they charge it and fools will buy it !

I spent about £3600 on a full system on my CSL then i changed just the backbox for a daft Gruppe M one @ £1800 !!!!
Daft why, because it was the loudest, droneist, tinny sounding exhaust i ever heard.
Definatly always shop around for parts when tuning and if possible go direct to the manufacturer, i find VW parts okay in modding price, but the Brakes are ridiculously priced !