I have a ~290whp Focus ST
I have a ~290whp Focus ST that I've only got about 1100$ in bolt-ons and tune. At 2.0L it's a rocket, but severely limited by turbo size, which I hope to increase soon. The tune alone was the single largest gain, followed by the IC, and then the down-pipe. It also has 80k miles on it... So yeah, they come pretty conservative from the factory.