The COBB 2013 Ford Focus ST FMIC is the single best bolt-on modification for the platform, allowing for much cooler intake temps and dramatic power increases when tuned with an Accessport.
The COBB Front Mount Intercooler (FMIC) for your Focus ST is the easiest way to drastically improve power when coupled with tuning from the Accessport. Even when stock, the factory FMIC can be overwhelmed with heatsoak. By using a 57% larger core with streamlined piping, your Focus ST will come alive with charge air thats up to 100 DEGREES COOLER. After removing the grill shutters and drilling 2 simple holes, this FMIC requires no other modification for an easy installation with the included custom silicone adapters. Off the shelf maps are available for the Ford Focus ST Accessport so it's tuned right out of the box!!