Map Notes for BT Outback, BW Legacy

Supported Vehicles

• Outback XT, Legacy XT

  • 2020 - 2022

• Outback Wilderness

  • 2022

Map Availability:

All maps come pre-installed on the Accessport.

Open

Fuel Requirements:

Each map lists the minimum required octane. A higher octane fuel can be used safely on a map designed for lower octane. DO NOT use maps designed for higher octane with lower octane fuels. Top Tier gasoline should be used where available.

• Maps designated with 87 OCT or 91 RON are for use with 87 octane/91 RON fuel or better. Also recommended for use with the 91 octane fuel found in Arizona and Nevada or better.

• Maps designated with 91 OCT or 95 RON are for use with 91 and 92 octane/95 RON fuel or better.

• Maps designated with 93 OCT or 98 RON are for use with 93 octane/98 RON fuel or better.

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Power Output

Stage1 Hard Parts Requirements

• Exhaust Requirements: Stock or upgraded catback exhaust.

• Intake Requirements: Stock air box and filter.

• Intercooler Requirements: Stock

• Boost Level:

  • 93 Octane: ~18.2psi +/- 1.5psi, tapering down as you reach redline.

  • 91 Octane: ~17.3psi +/- 1.5psi, tapering down as you reach redline.

  • 87 Octane: ~16.7psi +/- 1.5psi, tapering down as you reach redline.

Non-Performance Maps

Stage0

A map with stock calibration for diagnostic use

Stage1 Economy Mode

A Stage1 Map with reduced power and altered tables in order to increase potential mileage.

Valet Mode

A map with lowered limits for boost, vehicle speed, and RPM to prevent aggressive driving.

Anti-Theft

Table values zeroed or otherwise minimized to prevent the car from starting.

Additional Map Features

• Engine Oil Temperature Based Limits

  • If oil temperature reaches 240°F the amount of load (and boost) allowed by the vehicle will begin to be reduced.

• Air Temperature Based Limits

  • At very high and low air temperatures, we also put a limit on engine load to reduce the likelihood of damage to the engine.

Closing Warnings and Precautions:

• Use of inappropriate calibration/modification combinations will promote engine damage.

• Top Tier gasoline should be used where available. Use of lower quality fuels can result in catastrophic engine damage.

Dynamic Advance Multiplier (DAM) and Knock Strategy for Modern Subaru Vehicles

DAM or dynamic advance multiplier is a value that is multiplied (surprisingly) against the ignition timing to reduce power output under less than ideal conditions. Much like the 15+ DIT WRX, Subaru has started to actively utilize this system to have the car run the best it can for the given conditions. This is a departure from how it was used in the STI and other EJ-engined vehicles in which it was “bad” if it was less than one.

On the stock tune it was not uncommon to see values of less than 1.0 even under ideal conditions with appropriate fuel octane for what the vehicle required. For example.

• 87 typically sits around 0.32

• 91 around 0.50

• 93 ~1.0

That being said these values can and will move around and are not an immediate indication of something being wrong with the car. Rather you’ll want to look at feedback knock which is changes to ignition timing in response to knock, and fine knock which is where the ecu has seen consistent knock over the past and made a correction to how the car drives in response. Even then you’ll want to keep an eye on it in conjunction with other monitors such as intake air temperature etc.