DONT DO THE SC!! the JRSC sucks there is turbo kit for it and there is suposed to be a screw type SC avalible for it in the next year. The JRSC is worthless and has been for a while. They were the first ones a FI product for the focus but haven fallen way behind. If you would like you could PM me and i will give the adress to the focus site im on. They have a lot of info these. I would post it but dont want to advertise another site on this one. You probably know it anyway.