I want to make my focus faster and more powerful (ideally without worsening mpg)...just wondering what the most cost effective way of doing so is? I hear there are some really good tuning boxes out there but the good ones seem to be about £300, is an ECU remap a better option? although i have heard there maybe bad consequences of the remap.
Any help much appreciated...you will definitely know more than i do.
Any help much appreciated...you will definitely know more than i do.