Hi all now I have resolved my running issues. I want to get the car tuned, ill be doing all the bits except the remapping myself so just want people's thoughts on what company to use. Car is a standard mk2 focus RS
I know of

Jamsport
J W Racing
Collins
Scc
Puma build

Who has had any experience with these and who would be best to use, none of these company's are close to me as I live in Sudbury Suffolk,