Here's why the S550 EcoBoost is one of the best performance cars you can own and mod right now. The EcoBoost Mustang has taken its fair share of criticism over the years. Four cylinders in a Mustang felt like blasphemy to a lot of people. But the mustang community has had years to dig into this platform and the verdict is pretty clear that the S550 Ecoboost is seriously capable and the haters are running out of arguments (outside of the one...) Bone stock you're working with a 2.3L turbocharged four cylinder pushing 310hp that Ford spent absurd amounts of money developing. They also gave it independent rear suspension that gives you a level of handling the live axle crowd could only dream about. It's quick, it's balanced, and it's genuinely fun to drive straight off the lot. HOWEVER, stock is LAME, and the EcoBoost responds to modifications better than almost anything in its price bracket. A tune alone can push you well past 350whp. Add a bigger turbo, an intercooler, and supporting...