Lovely looking car - when you say chip do you mean like on the old RS turbos,cossies where you open the ecu a put a new chip in.Can the STs be remapped I know on the scooby this is the way to go - ECUTEK 3 live remap.Have you retained the cat or put on a sports cat.Sorry for all the questions but havent had a Ford since 1999 and the STs all new to me.