Tuning guide to the Subaru/Toyota FA20

We take a look at the best mods and upgrades for the FA20 engine including supercharger and turbo kits and look at the engines weak spots. The FA20D fitted to the BRZ and GT86 use a Subaru engine design including variable valve timing in a boxer layout with a Toyota D-4s clever injection system combining direct injection and port injection to maximize efficiency and response.