COBB Accessport V3 - 2008-14 Subaru WRX/STI, 2007-13 Subaru Forester XT, 2007-12 Subaru Legacy GT


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Cobb SKU: COBAP3-SUB-003

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For nearly 10 years, GrimmSpeed customers have been purchasing GrimmSpeed intercoolers, exhaust products, intakes and boost controllers. One of the most common post-purchase questions that we get from customers is "OK, I've got this great setup, but I know that it needs tuning. Where do I start?" Well, we've finally partnered with the well-respected leader in ECU upgrades, COBB Tuning. We use their Accessport device and software extensively during the engineering and development phase of our projects and are quick to recommend them to our customers, so it only makes sense that for those very same customers, we're able to offer a complete solution.

At this time, Accessports will ship just as they do from COBB Tuning, with the available OTS (Off The Shelf) maps. To make the best use of your GrimmSpeed and COBB Tuning hardware, we still insist that you build a relationship with a tuner that you trust! In the future, we hope to offer custom maps, designed to be used with GrimmSpeed Staged Power Packages and customers that purchase GrimmSpeed products with OTS support will have access to those maps files, free of charge.


Simple ECU flashing with gauge package! The new in-cabin mountable Accessport V3 has a large, full color, higher resolution screen which allows you to monitor up to six parameters in real time. Fully customizable from the look (multiple bezel colors), layout (set up race, street, or dyno gauge clusters), and mounting options (choose from 1,000s of standard vehicle mounts). And what's looks without brains? More processing power, memory, and storage to flash faster while saving all of your maps and logs. This is your new Accessport.


The Accessport is the world's best selling, most flexible, and easiest to use ECU upgrade solution for your Subaru. Unlock power hidden within the vehicle by replacing conservative factory settings with more aggressive calibrations. Follow our staged upgrade path with pre-loaded Off The Shelf (OTS) maps or use custom mapping for any modification level. It's the last engine management solution you'll ever need.


  • Larger, full color, higher resolution screen
  • Customizable multi-gauge display
  • In vehicle mount, with on/off switch
  • Faster and easier to use with a familiar face
  • Interchangeable faceplates


  • 2008-2014 Subaru WRX (Sedan and Hatch, Manual and Auto Transmission)
  • 2008-2014 Subaru STI (Sedan and Hatch, Manual Transmission)
  • 2007-2009 Subaru Legacy GT (Manual and Auto Transmission, Including Spec B)
  • 2010-2012 Subaru Legacy GT (Manual Transmission)
  • 2007-2013 Subaru Forester XT (Manual and Auto Transmission)
  • 2007-2009 Subaru Outback XT (Manual and Auto Transmission)

Install and Technical Documentation

COBB Tuning Accessport Support