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Mountune B1 Package - Ford Focus ST (2013-2018) - Includes COBB Accessport V3

Focus St Cobb V3 Accessport Ecu Flasher, High Flow Air Filter, Upgrade & Calibration Package | Mountune

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Availability: Usually Ships in 1 to 2 Business Days
Product Code: AP3-FOR-001B1

Select the Following Corresponding to Your Vehicle

Vehicle Type*:
Focus ST 2013
Focus ST 2014
Focus ST 2015
Focus ST 2016
Focus ST 2017
Focus ST 2018

Intercooler Type*:
Stock original

Fuel Octane / Type*:
91 Octane
93 Octane


COBB Accessport V3 ECU Flasher Ford Focus ST 2013-2018 B1 Package


Ford Focus ST B1 Package

  • COBB Accessport V3
  • mountune Optimized Calibration
  • mountune High Flow Air Filter

The Mountune Focus ST B1 upgrade package includes the very best components to enhance the performance of your Focus ST including our Optimized Calibration (Tune) that enhances the performance of your car based on your specific use and build specification. Mountune performance calibrations are proven to extract the maximum performance while maintaining reliability from the Focus ST. The Mountune B1 package brings together the essential pieces to get you going.

The Accessport is the industry leading OEM ECU flashing, managing and monitoring assistant. Unlock power hidden within the ECU by replacing conservative factory settings with more refined and improved calibrations. The standard Cobb Accessport from Mountune USA includes all of the standard Cobb calibrations along with an Optimized Mountune calibration built to your specifications based on your modifications, octane, and preferences. The results are impressive gains in torque and horsepower with incredible custom features that can be adjusted right from the handset to meet your requirements. With over 40 years of Turbocharged Ford 4-cylinder ECU calibration experience, it’s no surprise that Mountune USA powers the fastest Fords out there.

Rest assured, our engineering team has more Focus ST and Fiesta ST tuning experience than any other source available to you. This Accessport is not locked and can be further adjusted at any time.

Mountune Performance calibration slot assignments

The mountune calibrations include 4 slots that are switchable at any time, on the fly, by simply pushing a few buttons. This is a very convenient feature that can be further adjusted in many cases. The default settings for the Focus ST are laid out as such:

  • Slot 1 - Standard high performance calibration
  • Slot 2 - Standard high performance calibration with indicated Launch Control
  • Slot 3 - Low boost performance calibration
  • Slot 4 - Same as slot 1 with LESS spark (aka panic mode / bad fuel mode)

**Launch control & flat foot shifting can be adjusted anytime via the Accessport. By default launch control is set at 2400 RPM and flat foot shifting is set at 4000 RPM.

Ford Focus ST with mountune ECU calibration.


This part has been designed and is intended for off-highway application only. Installation of this part on a vehicle that is driven on public roads may violate U.S. and Canadian laws and regulations relating to emission requirements and motor vehicle safety standards. Click Here for Emissions compliance information.

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Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 27 Write a review »

  0 of 0 people found the following review helpful:
5 of 5 VS Ford racing August 17, 2020
Reviewer: Patrick Amyot from Gatineau, QC Canada  
I replaced the ford racing tune with this one and found it more conservative in the power band. What i mean by this is the acceleration is more linear.

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  0 of 0 people found the following review helpful:
5 of 5 Cobb is great tuner tool. July 8, 2020
Reviewer: Nick M. from Newnan, GA United States  
Easy format for tuning and monitoring. I'd like to see mountune doing custom tunes again though.

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  0 of 0 people found the following review helpful:
5 of 5 Flawless November 21, 2019
Reviewer: Brice from Cary, NC United States  
It does exactly what you need it to and installed nicely. The faceplate on the AP can be tricky to get off so be careful not to snap it. Charge air is staying colder longer.

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  0 of 0 people found the following review helpful:
4 of 5 Great producy August 15, 2019
Reviewer: FoST98 from Salt Lake City, UT United States  
Awesome product all around. My issue is shipping takes forever. My accessport took me 3 weeks to get..  my intercooler took me like a month and a half. Awesome product and all but that needs to be worked on.

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  0 of 0 people found the following review helpful:
5 of 5 Must Have! March 18, 2019
Reviewer: Erik from Dana Point, CA United States  
This is definitely every ST should have! Get more power without risking reliability.  Randy and I are still working out my calibration but he's been incredibly helpful and has quick responses. Intercooler install instructions lack how to setup the mounting (which i find to be the most important part). However, figured it out on my own with the help of some friends.

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