right you will need the computer loom, a fuel flow sensor, a different fuel pipe (to the injector) and a speed sensor for the gearbox (goes in line with the speedo cable) as well as the computer unit itself
I retro fitted the computer to mine, it was so annoying with its constant beeping and never worked properly so it was ripped back out again soon enough lol
plus you really don't want to know the MPG when you're booting it