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Introduction 2023+ WRX MT UsersIf you are using Atlas 2024.4 or earlier, recovery is not possible on these ECUs. Atlas 2025.1 and later resolves this issue upon first programming with the ECU. In order for a calibration (tune) to be recognized completely by ...

Table Editor The Table Editor is a critical view in Atlas. Using the Table Editor, you can change calibration lookup tables and modify ECU behaviors resulting from their computed values. Most, if not all, recalibration done on your ECU will happen from within...

Interpolation in the Table Editor Interpolation is a feature in Atlas that allows you to effectively smooth table cell data. Using interpolation, you can create gradients that prevent the ECU from suddenly "jumping" in values, helping to avoid detonation and ...

If you would like to revert your changes in the current calibration to another calibration, you can always Apply a different calibration by clicking Edit -> Apply different calibration... The default selection in the Select Calibration dialog box will alw...

Introduction Description Most vehicles have a manner in which you can recover the ECU should the flashing be incomplete. For the Subaru WRX (2015+), for example, your bootloader (never reprogrammed by Atlas) has logic which runs on start that will attempt to...

Introduction In order to avoid risking damaging or "bricking" your OEM ECU, you may instead choose to clone your OEM ECU to another, spare ECU that you have purchased. However, you will run into issues with this without cloning the ECU, as the OEM ECU in your...

Concepts Ignition For more information on how fuel is delivered, see our documentation page on Fueling & Injection Ignition, Flame, and Degrees BTDC Gasoline engines operate on the principle of fuel combustion. Typically in a direct injection system, first...

Concepts Air-Fuel Ratio/Lambda Combustion and Air-Fuel Ratio Gasoline engines operate on the principle of fuel combustion. By approximating the mass (not to be confused with volume) of air entering a cylinder from the intake manifold prior to fuel injection...

For more information on the basics of Ignition Timing and Detonation, see: Ignition Timing and Knock Control. Targets Acceleration (or "Primary") Base and Dynamic Advance This target is active when the accelerator pedal is depressed, or otherwise when cond...

Importing a Calibration/Tune Atlas is Free and Open! Atlas, as an open tuning platform, encourages sharing calibrations (tunes) within the community. At NAMR, we have a strong stance against Atlas locking tunes. When you import a calibration, you always have...

Introduction Tuning your car, ultimately, is a scientific endeavor. Without accurate data, you have little if anything to inform your decisions (inputs) to your tune as you reform it to meet your goals. Data-logging is an important method to receive feedback ...

Atlas Flash Support USDM WRX Manual Transmission Support VehicleYear, Market, and Model Flash SupportSee: Flashing Page Recovery SupportSee: Flash Recovery "Brick" Recovery SupportSee: Flash Recovery 2015 USDM Subaru WRX MT Atlas 2025.1 or...

Introduction If you're new to tuning, it's good to have a guideline to how you approach this process. That's why we have this document, to help you get in the right mindset to make your goals with your car realized with the reliability you want. These are bas...

Introduction Atlas is a open tuning project, provided for free to the Subaru community as a resource to recalibrate (tune) modern Subarus such as the VA and VB WRX.  Even though we are a wide open door and do not impose any paywalls, licensing, or tune restri...

Introduction When designing or data-logging a tune, it is important to not only record accurate datapoints and modify the right tables, but it is also critical that you understand what each data stream (or parameter) and table is referencing. For example, dat...

Atlas and OEM Calibrations Officially Supported Calibrations What is officially supported? Atlas provides at least one unmodified OEM calibration for every supported vehicle. Atlas does not ship with any pre-loaded, modified ("off the shelf") maps. For thes...