COBB Accessport V3 – 2002–2005 Subaru WRX 2.0L Turbo (EJ20) | AP3-SUB-001

The COBB Accessport V3 is the industry-standard handheld ECU tuner for the 2002–2005 Subaru Impreza WRX (EJ20 turbo). Plug-and-play installation via the OBD-II port — no laptop required for initial setup. Ships pre-loaded with COBB’s Off-The-Shelf (OTS) maps for multiple octane levels and modification stages. Includes both silver and black faceplates. Compatible with 2002–2005 WRX only — not compatible with STi models.

OTS Maps — Pre-Loaded Power Gains

The Accessport V3 ships with COBB’s OTS map library pre-loaded — select and install a map directly from the device in approximately 5–10 minutes. OTS maps for the 2002–2005 WRX include:

• Stage 1 — 91 Octane: +50 HP / +50 lb-ft torque — stock vehicle, 91 octane fuel
• Stage 1 — 93 Octane: +60 HP / +60 lb-ft torque — stock vehicle, 93 octane fuel
• Stage 2 Maps: For vehicles with intake and exhaust modifications (catback, downpipe)
• Economy Maps: Optimized for fuel efficiency
• Valet Maps: Reduced power output

Power gains listed are for stock vehicles on the specified octane. Use the correct stage map for your modification level — running a Stage 2 map on a stock vehicle is not recommended.

Key Features

• Full-Colour Touchscreen: Real-time monitoring of boost pressure, air/fuel ratio, knock count, ignition timing, and other critical parameters. Customisable gauge layout displays the parameters most relevant to your build
• Data Logging: Records detailed performance data during driving for analysis via COBB’s free Accesstuner software. Essential for custom tuning and diagnosing issues
• Launch Control: Available on select maps — holds RPM at a set limit for consistent, repeatable launches. Useful for drag racing and autocross
• Flat-Foot Shifting: Available on select maps — momentarily cuts ignition timing during upshifts, allowing full-throttle gear changes without lifting
• Custom Tuning Support: The Accessport is the hardware interface for COBB Accesstuner — work with a professional tuner to create custom maps optimised for your specific modifications, fuel type, and power targets. The OTS maps are an excellent starting point; custom tuning extracts the maximum from your specific build
• Transferable: Unmarry from your current vehicle and transfer to any compatible future vehicle. Always unmarry before selling the vehicle or taking it to a dealership
• Silver & Black Faceplates: Both included — swap without tools to match your interior

Fitment

• Subaru Impreza WRX (2002–2005) — 2.0L EJ20 Turbo
• Not compatible with WRX STi models

Verify your specific model year and engine code before ordering. Use the octane level specified by the selected map — running 91 octane fuel on a 93 octane map will cause knock and potential engine damage. Always unmarry the Accessport before selling the vehicle or bringing it to a dealership for warranty work. Installing the Accessport and running non-factory maps may affect your factory powertrain warranty — consult COBB Tuning’s documentation for current warranty impact guidance. Check COBB’s website for map updates and firmware updates before initial use.

Specifications

• Brand: COBB Tuning
• Part Number: AP3-SUB-001
• Display: Full-colour touchscreen
• Connection: OBD-II
• OTS Power Gains: +50 HP / +50 lb-ft (91 oct) | +60 HP / +60 lb-ft (93 oct) — stock vehicle
• Features: OTS maps, data logging, launch control, flat-foot shifting, custom tuning support
• Faceplates: Silver and black included
• Transferable: Yes (unmarry required)
• Application: Subaru Impreza WRX 2002–2005 (EJ20 Turbo) — not for STi
• Weight: 1.4 lbs