iv seen this thread http://www.audi-sport.net/vb/a3-s3-f...gasflowed.html on porting and polishing the head and skimming it on an st170. Now would this do anything for a standard car or would it be a waste of time? I have a mate that does machining and I could get the lads at work to pull it all apart so wouldn't cost me the earth to do. Also is there anything else anyone recommends for power increase. I need advice on the best sort of tyres. I have decided to use eibach pro springs in black. I need advice on what pads and if needed discs to use aswell all for fast road use. Thanks in advance.