hey guys,
eventually got it sorted, have to say it was like pulling teeth but they eventually relented and stuck it on. Although they charged me an hours labour, twice as much as julian, and wouldnt budge. I kept an eye on my car in the workshop through the viewing window and the technician was in there for like 4 minutes max....but what do you do, they have you over a barrell.
so anyway, I now have a rock solid rev counter, and in addition over the 90 mile journey down between 75 and 85mph I was averaging 25mpg, the same journey back I averaged 30mpg.
cant complain!
I reset the ecu after i got the car back from the garage, so it may improve yet, so I will report back.
Nice to meet you Julian, lovely motor you have there !