hell got the 2.0l blacktop mk4 fiesta up and about, its running on the 1.6 ecu and 1.3 gearbox but i did the quarter mile in the same time the 1.6 did it and my friends mk5 zetec s beat me! im not best pleased, it was just spinning off the line, my dads a machanic he said its the ratios, i intend to get it remapped.
Im just wondering what gearbox and engine managment should i use? any other advice would be great.

 

perhaps a lsd may help

 

i'd go dta ecu and get it mapped properly and put an uprated rs turbo diff in the gearbox.a 2 litre wont run correctly on the same fuelling as a 1.6 and you prob have a filter and exhaust on there too.