That sounds quite possible, will try and quicken it up and see where it gets me. That would also probably support the reason it works sometimes, I must be doing it a little too slow. Cheers for the help as always guys

On other news, I took her to 7k rpm today.....

The sound is incredible, the looks I get from people, I don't think they can believe such a noise can come from 'just' a Fiesta. Love it!!!!

I'm getting the car on a dyno towards the end of the month, will post up the results!