Full Answer
The list is short, which is much of the appeal.
**A computer.** ATLAS runs on Windows, Mac and Linux, so almost any reasonably modern laptop works. A laptop specifically, rather than a desktop, since it needs to be in the car for reading, flashing and datalogging.
**The ATLAS software.** Free and open-source, downloaded from North American Motorsports Research.
**A supported OBD adapter.** This is your only required purchase. ATLAS supports several, and they differ meaningfully in speed and convenience:
- The OBDX Pro VX is the newest supported option and connects wirelessly over Bluetooth or WiFi. It is described as lightning-fast.
- The Tactrix OpenPort 2.0 was the original flagship device and remains widely used, though it has been listed as out of stock.
- The OBDLink EX is a wired secondary option, noted as slower than the OpenPort 2.0.
- Various ELM327 adapters work over a direct serial connection via a driver written natively into ATLAS.
Adapter choice matters more than people expect. Flashing an ECU is a data transfer, and a slower adapter means a longer flash - which is time the car spends in a state you would rather it did not linger in.
**A healthy battery, or a charger.** This is not on the official parts list but it belongs on yours. The car sits with the ignition on and the engine off during a flash, drawing current the alternator is not replacing. A battery tender or charger is cheap insurance against a voltage drop mid-flash.
**Some patience and reading.** ATLAS gives you direct access to your ECU's tune. That is powerful and it is unforgiving of guessing. Read the documentation before your first read, let alone your first flash.
What you do not need: a COBB Accessport, a subscription, a professional tuner, or a dyno. All of those can be part of a build, and none of them are required to get started.
Last updated 8/20/2026