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The COBB Tuning Accessport V3 AP3-SUB-002 is a comprehensive ECU tuning, diagnostics, and engine management solution developed specifically for classic turbocharged Subaru platforms. Engineered for select USDM Subaru vehicles equipped with 2.5L turbo EJ-series engines, this handheld tuner gives drivers complete control over engine calibration, real-time data monitoring, and performance analysis all from a single, intuitive interface.
Factory Subaru ECU calibrations are intentionally conservative to ensure emissions compliance, fuel quality tolerance, and long-term reliability. The Accessport V3 allows you to safely unlock additional horsepower and torque by reflashing the ECU with optimized maps developed by COBB’s calibration engineers. These maps enhance throttle response, boost control, and power delivery while retaining OEM safety strategies built into the factory ECU logic.
Beyond tuning, the Accessport V3 functions as a full-time in-vehicle performance monitor. The high-resolution color display provides instant access to live engine data, customizable digital gauges, data logging, performance timing, and diagnostic functions. Whether your Subaru is stock, lightly modified, or extensively built, the AP3-SUB-002 scales with your setup and remains fully reversible at any time.
Installation is completely plug-and-play through the OBD-II port, and the ECU can be returned to factory calibration using the built-in uninstall function. When installed according to COBB’s application guidelines, the Accessport V3 is 50-state emissions legal, making it one of the most trusted and compliant Subaru ECU tuning solutions available.
The COBB Accessport V3 (AP3-SUB-002) supports select turbocharged Subaru vehicles equipped with 2.5L EJ-series engines. Always verify compatibility using your vehicle’s exact year, model, transmission, and ECU. Compatible with both automatic & manual transmissions unless noted below.
It re-calibrates the ECU to optimize boost, fuel delivery, ignition timing, and throttle response while providing live monitoring, logging, and diagnostics.
Yes. COBB’s OTS maps are designed for stock and lightly modified engines, retaining factory safety features.
Yes. The Accessport supports both standard OTS maps and fully custom tuning for advanced modifications.
No. It works standalone through the OBD-II port, with no additional devices required.
Yes. The uninstall function restores the ECU to its original factory calibration.
Yes. When used according to COBB’s guidelines, it is legal in all 50 U.S. states.
Absolutely. It functions as a full in-car gauge cluster with live data, alerts, and performance logging.
Yes. It includes configurable shift lights, launch control, and flat-foot shifting support.
Warranty impact varies by dealer. The Accessport can be uninstalled prior to dealer visits, but check your manufacturer’s policies.
This AP3-SUB-002 model is compatible with select USDM 2.5L turbocharged Subaru vehicles from 2004–2007. Always confirm fitment before purchase.
Warning! Installation of this Accessport over anything other than OEM or COBB software may result in ECU/TCU failure. Please contact COBB Support if you have any questions.
CLICK HERE FOR AP3-SUB-002 COMPLETE MAP NOTES, DYNO CHARTS AND POWER GAINS!
If you have a mix or other brands of aftermarket mods installed that are not COBB Tuning, we offer custom tunes for your Subaru remotely through our Clark Turner e-tune service. Add the custom e-tune option on this page to purchase with your COBB Tuning AP3-SUB-002 AccessPORT. After your order is placed, we will reach out via email within 48 hours to collect all necessary information.
SKU:COBBAP3-SUB-002 ,UPC: ,Availability:
