Pretty sure the is fake. Took it off to compare it with a known good genuine one and there are subtle differences, whether they are correct or not is for another day and a discussion with the seller.
Anyway, the genuine Bosch was fitted, I warmed it up and prepared the values for the test drive, took the same route as before and it pulls like a train. Graphs as below…
So it’s been a great learning curve and I know a lot more of what information to post up in future. Thanks for all the assistance, and while I’m sure Dr Sheldon will tell me it’s more luck than judgement, I’m in a pretty good mood so have at it.
I’m now going to pour 75ml of Arran into a glass and drink it at a rate of 25ml/5 minutes.
Thanks again.