Thats what im going to do then i will go to my nearest Bosch dealer which is in Hitchin town centre. I took out one of my injectors today and found it quite easy to remove and put back. I can see that the injector i removed was the original. Does any one know what sort of difference its going to make when i get a new set and when i do ill also get a new set of plugs. Will my car run a bit better once theyve been changed?