Maximize the performance of your 2017-2020 Honda Civic Si with the COBB Accessport V3, the worlds best-selling and most flexible ECU upgrade solution. This powerful tool allows you to unlock hidden power by replacing factory conservative calibrations with more aggressive ones. With the ability to use COBBs pre-loaded Off The Shelf (OTS) Maps or customize your own for various modifications, the Accessport provides everything you need for the ultimate tuning experience.

The Accessport features a large, high-resolution full-color screen that allows you to monitor up to six real-time parameters at once. Its customizable multi-gauge display lets you choose from street, race, or dyno gauge clusters. You can also switch between 1,000s of standard vehicle mounts, giving you flexibility in mounting. With two interchangeable faceplates, you can personalize the look of your Accessport to match your style.

Installation is easy and quickjust 20 minutes in your own garage or driveway. Simply plug the Accessport into your Civics OBDII port and follow the simple on-screen instructions to get started. The device provides access to COBBs OTS Maps, developed by the COBB Calibration Team for stock vehicles. These maps are designed to work with components like replacement air filters and exhaust systems that retain factory catalytic converters.

Additionally, the Accessport lets you monitor live data, log up to 10 hours of engine performance, and even measure 0-60 mph times, quarter-mile ETs, and trap speeds. With trouble code reading and clearing, you can easily diagnose issues without needing to visit a dealership. The Accessport also supports shift light functionality, giving you precise control over your shifts for better performance.

Warning! Installation of this Accessport over anything other than OEM or COBB software may result in ECU/TCU failure. Please contactCOBB Supportif you have any questions.

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Why?

The Accessport is the world’s best selling, most flexible, and easiest to use ECU upgrade solution for your Honda. 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.

CLICK HERE FOR MAP NOTES, DYNO CHARTS AND POWER GAINS

Interactive dyno chart: hover or tap lines for HP and TQ percentages.

Accessport for Honda Civic Si (FC1/FC3) 2017-2020

• 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
• Includes 2 Interchangeable Faceplates