well fella, i have a 1.6 zetec s focus and to get the power up all you can to is 3 to 4" catbat system, panel filter, cams, and superchip. you could get a de-cat but you must make sure the new cat back system is no more than 2" to the back then your 3 or 4" out. if you are in or around essex there is a company in chelmsford that can do a turbo for the 1.6 but they will have to do all kinds of stuff to the engine so it dont blow up. and its not cheap!!!