i only got the tuning box as it was a 2nd hjand £20 bargain, a proper remap will be better but the head is to old school and will give 150bhp with a remap, decat , exhaust and filter and even with that 150 will be pushing it. mine was the 113 bhp (115 ps) so only 15bhp increase but the extra torque made a hell of a difference, used to put it in 3rd at 30mph and floor it and it would pin me in the seat and just fly. I also had a citroen c4 vts 2.0 hsi with 138 b hp the focus would just about keep up with that but i had the c4 remapped in the end and that gave 169 bhp (31 bhp increase) and 287lb/ft that thing was awesome and would easily nail my st170 from 30-130.

the graphs are all after, i should have scanned them really but it was in 2007 and lost them now unfortunatly lol.

the focus tdci is a great car but not a performance car. I have seen a mondeo sttdci go from 155 bhp to 202 bhp and 288lb/ft with a remap and decat.