Alex, thanks for the comments, I'm going to see if my S4 has the LATEST tune codes. Rik, try hooking up to Modifications and Workshop Talk - there's quite a lot about 600 tuning problems including the use of Tune Boys. I'm not convinced that a Tune Boy will solve the problem completely although the manufacturers reckon they can. Let me know how it goes. Rik, could you let me know where you can pick up the Ermax stuff in the UK at those prices? I wouldn't mind checking to see if it can be sent.
Best wishes to all
