i have found a bmw specialist that has been recomended by a few people, he is ex bmw and has all their test equipment, so i will book it in with him, the problem is i will have to Aframe the car to heathrow, thats a 1hr drive at best so will b horrible on an a frame.

and no its not worse when cold, its better. it runs fine when cold, but very quickly gets worse, when its warm.