Focus ST Engine Management

This product is intended for customers who have already purchased a COBB Accessport and a JST Performance custom tune and would like to add on an a...

We thought we would make it easier for our newest customers to upgrade their Focus ST's by introducing our best selling products now in a package! ...

Adding modifications and need an upgraded tune? No problem! This product is intended for customers already running a JSTuned ProTune who have decid...

This product is intended for customers already running a JSTuned ProTune who have decided to upgrade to our Unlimited Tune option. After purchase, ...

The Accessport is the world's best selling, most flexible, and easiest to use ECU upgrade solution for your vehicle. Unlock power hidden within the...

The Accessport V3 is the world's best selling, most flexible ECU upgrade solution for Ford. Unlock power hidden within the vehicle by replacing con...

The Stage 2 Power Package for the Ford Focus ST is the best second level for the Ecoboost powered vehicle. During extensive testing, COBB engineers...

The most comprehensive Power Package available for your Focus ST! Includes the Accessport V3, Intake, Front Mount Intercooler, Rear Motor Mount, Ca...

Need a better mounting solution for your COBB Accessport? This suction cup mount works great for mounting your Accessport in a convenient viewpoint...

From the factory, your vehicle's computer is calibrated for the masses, designed with the average driver in mind, not the performance enthusiast. T...