COBB Accessport V3 for Subaru Ascent / Outback XT / Legacy XT
The COBB Accessport V3, part AP3-SUB-007, is a VIN-locked ECU flashing device covering the 2023-2025 Subaru Ascent, Outback XT, Outback Wilderness, and Legacy XT, loaded with off-the-shelf performance calibrations.
Key Features
- Flashes the factory ECU with COBB off-the-shelf performance calibrations
- Covers Subaru Ascent, Outback XT, Outback Wilderness, and Legacy XT 2023-2025
- VIN-locked to one vehicle at a time. Can be transferred between owned vehicles
- Plugs directly into the OBD-II port for flashing, monitoring, and datalogging
- Includes real-time gauge monitoring and datalogging capability
- Firmware and map updates are managed through COBB’s Accessport Manager software
- Device AP3-SUB-007 stores multiple off-the-shelf maps for easy switching
- Part AP3-SUB-007 covers four related Subaru model lines from one device
Fitment
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2023-2025 | Subaru | Ascent | |
| 2023-2025 | Subaru | Outback | XT |
| 2023-2025 | Subaru | Outback | Wilderness |
| 2023-2025 | Subaru | Legacy | XT |
| 2023-2025 | Subaru | Legacy | Sport |
Specifications
| Detail | Value |
|---|---|
| COBB Part Number | AP3-SUB-007 |
| Device | Accessport V3 |
| Flashes | ECU |
| Fitment | 2023-2025 Ascent, Outback XT/Wilderness, Legacy XT |
What’s Included
- Accessport V3 unit
- Two faceplates
- OBD-II cable
- USB cable
- Soft case
- Holster
- Sticky mount
About COBB Tuning
COBB Tuning has engineered performance electronics, intakes, exhausts and suspension components for turbocharged platforms since 2003, building its Accessport ECU flashing device alongside record-tested bolt-on hardware for Subaru, Ford, Honda, Toyota and more.
FAQ
What vehicles does this fit?
It fits the 2023-2025 Subaru Ascent, Outback XT, Outback Wilderness, and Legacy XT.
Is this device VIN-locked?
Yes, it locks to one vehicle’s VIN and can be transferred to another owned vehicle.
What is included in the box?
The Accessport unit, two faceplates, OBD-II cable, USB cable, soft case, holster, and sticky mount.
Can I go back to stock after flashing?
Yes, the Accessport allows flashing back to a saved stock calibration.
Do I need a computer to use this?
A computer is needed to register the device and manage firmware and map updates.
Does this fit a Legacy Sport?
COBB’s own listing describes coverage of Legacy XT and Sport variants. Confirm your exact trim with COBB before ordering.
Is a warranty included?
Yes, it is covered by COBB’s Component Limited Warranty against manufacturing defects.
Can I datalog with this device?
Yes, it includes real-time gauge monitoring and datalogging capability.
Installation Instructions
- Download and install COBB’s Accessport Manager software on a computer
- Register the Accessport AP3-SUB-007 unit and update its firmware if prompted
- Plug the Accessport into the vehicle’s OBD-II port with the vehicle off
- Follow the on-screen prompts to read and save a copy of the stock ECU calibration
- Select and flash the desired off-the-shelf map from the on-device menu
- Wait for the flash to complete without interruption, then start the vehicle to confirm success
Prop 65 Warning
WARNING: California residents can view COBB’s Proposition 65 warning notice on the product listing page for specific chemical exposure information.
