Well stock focus st his mpg is allmost the same as the fiesta st 205 kit. For now it's cheaper to run the focus then the fiesta st. But yeah every bhp you wanted more is costing more and more mpg's.
For mapping the focus i am not sure what i want to do with it yet. First gonna drive it stock to see what is weak point in my eyes, and then tune it up. one thing is for sure it's getting a wideband lambda that the afr is good. 2nd is i am not wanna hit a bencmark of 320 plus bhp. So when i got the focus over 2 days it's all start over agian the exploring. LIke the fiesta st had allot of fun with it. It had a nice bhp and torque versus long milage fun. You can get more out of them i know. But the lifetime of a engine is getting shorter. Plus if you go n/a there is a point that every bhp you want more is costing more and more. Even talked on the ring with Dan over swapping the engine of the fiesta for a 2.5 or fitting a turbo on it . But my tuner had a nice deal Now i got a 2.5 1 cilinder extra plus a turbo . Well this gonna be a one of a kind here in the Netherlands When i am done with it. Plus getting parts over here is costing allot.