It was the last bit of the running in process for me, I had 400+ miles on the clock before setting out.

I did it at night too, with an empty motorway so you could speed up, slow down, start to put a teeny bit of boost through it and raise the rev range just a smidge. By that, I mean going up to 5000 3 or 4 times instead of holding it at 4000 all the way.

There are so many theories on what you should or shouldn't do. Some say that keeping it too low glazes the bores. Some say you should get a bit of boost through it.

I will never forget getting mine up to SRR for Simon to start the process, after pretty much nursing it through the run in. He then gets it on the rollers and canes the back out of it And just looks over with a knowing grin and says "don't worry..... it'll be fine"