Does anyone know of any decent Audi exhaust system suppliers? Im planning on changing my exhaust to either the TDI170 version of the 2.0t petrol version. I did find a website a month or so ago that sold them all at a really good price but I cant fo rthe life of me find it now! Could also do with finding out the cheapest place for lowering springs if anyone has any info. Cheers, Karl.