hello, can anyone recommend a good tuning service? I'm in west sussex and I've phoned around a few mobile tuning service companies, anything from 30 pounds for standard tuning, up to 45 for a crypton type.... Is it worth the extra money for crypton? As far as I can tell the bloke has a computer and software that ensures optimum engine performance, and you get a print out for your extra cash. Any advice from the huge pool of knowledge here??