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COBB Accessport V3 ECU Flasher Fiesta ST 2014-2017 FB1 Package
COBB Accessport V3 ECU Flasher Fiesta ST 2014-2017 FB1 Package

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Sale price:$589.00
Savings: $50.00

Availability: Usually Ships in 3 to 5 Business Days
Product Code: AP3-FOR-001FA1

Downpipe Type :

Engine Idle Speed :

Fiesta ST:

Flat Foot Shifting :

Fuel Octane / Type:

Intercooler type:

Launch Control :

Shift Assist :

Turbocharger Bypass Valve :


COBB Accessport V3 ECU Flasher Fiesta ST 2014-2017 FB1 Package


COBB Accessport V3 ECU Flasher Fiesta ST 2014-2017 with mountune High Flow Air Filter and mountune roll restrictor

  • COBB Accessport V3
  • mountune High Flow Air Filter
  • mountune roll restrictor (RMM)
  • mountune Custom Calibration
  • mountune Badge

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 aggressive calibrations. The standard Cobb Accessport from mountune USA includes all of the standard Cobb calibrations along with a custom 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 to meet your requirements. With over 15 years of Ford 4 cylinder ECU calibration experience it's no surprise that mountune USA are partners with Team O'Neil Motorsports, LaRoza Racing, and O.D.D. Racing. And with multiple Rally America Championships won using mountune USA custom calibrations, our programming team has more Fiesta ST tuning experience than any other source available to you.

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 Fiesta 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)

Maximize the performance of your Fiesta ST

For those who require additional support, the mountune ECU calibration can be optimized further with data logging and program revisions at no extra charge. Engine performance is enhanced by reviewing data logging files along with calibration revisions based on feedback from the end user. The duration of the calibration and file revision period for the chosen fuel type / octane is 45 days from the time the first file is sent to the customer, which is preloaded onto the AP when it ships. Multiple calibrations can also be requested during this time period. Once the 45 day period has expired the custom calibration period ends. Future custom calibrations are subject to additional fees depending on the exact nature of the request. mountune optimized Accessport calibrations are available only to customers that have purchased the Cobb Accessport directly from mountune. Custom programming options include, but are not limited to: MAP (slot) switching, Launch Control settings, Flat Foot Shifting settings, Ethanol (E30 & E40) support, 100+ Octane support, Gear Based Torque Limiting, Shift Assist, Idle Adjustment, Rev Limiters, Shift Light settings, and Advanced Wastegate Adjustments. *Please note this free offer for calibration optimization is not available for turbocharger upgrades, engine swaps, or nitrous oxide applications and applies to the original purchaser only. This service is nontransferable and other restrictions may apply. If you have questions about our mountune calibrations please do not hesitate to contact us directly at (714) 424-9400 or at usa@mountune.com for more information.

Ford Fiesta ST with mountune ECU calibration compared to the stock 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.

Championship winning Fiesta ST with Mountune ECU programming and hard parts
Cobb slot switching, Launch Control, and Flat Foot Shifting explained

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Average Rating: 5 of 5 Total Reviews: 7 Write a review »

  0 of 0 people found the following review helpful:
Great service, great result October 24, 2017
Reviewer: Anonymous Person from Pasadena, CA United States  
Before I made the purchase, I email Randy for some clarification, and he took the time to explain everything. I ordered, and the installation is very easy and straight forward. Yet, the result (difference) is great. You can definitely feel it. I am currently still fine tuning with Randy, so I am looking forward to the final result.  Definitely recommend to others.

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  0 of 0 people found the following review helpful:
Cobb accessport September 22, 2017
Reviewer: Robert Meader from Stockton, CA United States  
Excellent customer service !  Package arrived fast and everything was perfect  Mountune also emailed me and spoke with me on the phone explaining in detail to run the preferred custom map caliberayed for my mods

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  0 of 0 people found the following review helpful:
Tune experience was fantastic. September 11, 2017
Reviewer: Stephen Landon from Gilberts, IL United States  
I want to thank Randy Robles for his great work on my tune. Everything has been working out great and I am very happy with the power I am putting down.

Parts are good and high quality.

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  0 of 0 people found the following review helpful:
Fiesta st FB1 May 21, 2017
Reviewer: Robert Mochel from Palm city, FL United States  
Customer service is amazing Dan and randy are killing it. The tune on my car is  astonishing I did not know the car could feel so alive!!!!   I just can not wait until I have more mods to make even more power. This how the car should have been made from the factory. Also the RMM makes a hude difference in how the car puts down power no clucking or wheel hop just spinning of the tires.   Could not be happier with this kit!!!!  Thank you

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  0 of 0 people found the following review helpful:
FB1 Package February 13, 2017
Reviewer: James Nagy from Edmonton, AB Canada  
So far so good!  Having issues with the custom tune which hopefully can be sorted out.  Packaging was A1 and products arrived intact.  Fit and finish is superb and installation was a snap, took less than 10 minutes to install the rear motor mount.  Would highly recommend if you are looking to get a bit more bang out of your Fiesta ST.

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