2022 Subaru Ascent is Now Supported!


Subaru’s 2022 Ascent SUV is now supported by the Accessport, Off The Shelf Maps, and Accesstuner Pro HL!

Subaru Ascent Accessport (AP3-SUB-005)


The Accessport is the world’s best selling, most flexible, and easiest to use ECU tuning solution for your Subaru Ascent. Unlock power hidden within the vehicle by replacing conservative factory settings with more aggressive calibrations. Follow our staged upgrade path with pre-loaded Off The Shelf (OTS) maps or use custom mapping for any modification level. It’s the last engine management solution you’ll ever need.  Simple ECU flashing with gauge package! The in-cabin mountable Accessport V3 has a large, full color, higher resolution screen which allows you to monitor up to six parameters in real time. Fully customizable from the look (multiple bezel colors), layout (set up race, street, or dyno gauge clusters), and mounting options (choose from 1,000s of standard vehicle mounts). And what’s looks without brains? More processing power, memory, and storage to flash faster while saving all of your maps and logs.

Off The Shelf Maps

Every Accessport will come with our Off The Shelf (OTS) Maps pre-installed and available to flash to your Ascent.  At this point, hundreds, if not thousands, of hours have been poured into understanding Subaru’s factory logic and ensuring manipulated calibration data does not negatively impact the car’s drivability.  We even put our development Ascent through it’s paces at Circuit Of The America’s in a good old fashioned torture test.

  • Stage0 v110.ptm
  • Stage1 87+ Economy Mode v110.ptm
  • Stage1 87+ v110.ptm
  • Stage1 87+ Valet Mode v110.ptm
  • Stage1 93 v110.ptm
  • Vehicle Anti-Theft Mode v110.ptm

Power Gains

For those looking to add a bit of power to their Ascent, two versions of our Stage 1 OTS map are available for the Subaru Ascent.  A Stage 1 87+ map is ideal for those who want to continue putting lower grade fuel in the tank but may want a slight increase in power.  This calibration can safely be used with any fuel ranging from 87-93 octane.  For those looking for a larger bump in power over stock, the Stage 1 93 map file provides even more power and torque gains across the board.  This calibration does require users to run 93 octane fuel to prevent more significant knock events.  During development, we discovered that Subaru truly calibrated the ECU to use an 87 octane fuel and testing with higher octane fuel while using the factory calibration did not impact the overall power of the engine, though it did clean up occasional minor knock events.

Stage1 93 Octane

Ascent Stage 1 Dyno

Peak Gains: +11% HP / +16% TQ

Max Gains: +22% HP at 4400 RPM / +22% TQ at 3800 RPM

Stage1 87+ Octane

Ascent Stage 1 Dyno

Peak Gains: +8% HP / +4% TQ

Max Gains: +18% HP at 4400 RPM / +18% TQ at 3800 RPM

Non-Performance Maps

In addition to the performance maps mentioned above, we are also including an assortment of non-performance map files that can be useful in various situations.

  • Stage0 v101.ptm
    • This map allows users to experience all of the Accessport’s functionality while retaining factory Subaru calibration data.
  • Stage1 87+ Economy Mode v101.ptm
    • This map file will give users the best potential fuel mileage when compared to the 93 and 87+ Stage 1 files.  *Actual results will vary
  • Stage1 87+ Valet Mode v101.ptm
    • Limiting requested torque and implementing a 2-stage speed limiter allows Ascent owners to prevent abuse of their cars in certain situations.  Throttle reduction past 60 MPH, fuel cut at 70 MPH.
  • Vehicle Anti-Theft Mode v101.ptm
    • This file will prevent the vehicle from starting and is ideal for use in situations of longer storage.

For additional information, visit the Map Notes Page.

19 responses to “2022 Subaru Ascent is Now Supported!”

  1. Is this support also compatible with the outback xt since they share the same motor and transmission?

    • Hi Alex,

      It is still TBD as to when or if that vehicle will be supported. Sorry for the lack of news.


  2. Need this for the 6th gen XT outbacks! Still puzzled how the Accent gets a tuner but not the outback with the same engine…

    • While the engine and ECUs are very similar, there are some differences in calibration of the transmission control module. Unfortunately, we have not been able to add power to the OBXT while keeping the transmission happy.


  3. Just want to second/third/fourth the comments about the Outback XT. Got really excited when I saw the Ascent was supported because I instantly jumped to the conclusion that the Outback XT must be supported. Wrong. Keep working at it and give us some good news soon!

    • Hi there, this is the first we have heard of this issue! We will reach out to get more information so that we can help to address your issues.


  4. Hello. I just ordered a 2023 Ascent Touring. Will this tuner work for me? Someone told me either Subaru or Cobb was limiting HP adjustments that could be made from now on. Is that true?

    • Hey Brian, we are awaiting delivery of our 2023 Ascent and will know more once we have it in-house. Nothing has changed with our Ascent tuning support since it’s initial introduction in 2019. There are some concerns that TCM logic may not play nice with additional power as it has in the 2020+ Outback XT and 2022 WRX CVT. We’re keeping our fingers crossed and will report as soon as we know more.


    • Hey Corey, based on the center cap branding in original high-res images, we -think- they may be a KMC wheel.


    • Hey Patrick! We do not yet offer support for the 2023 Ascents. At the time of their release, they had an all new ECU which we hadn’t developed flashing for. Luckily, it is the same ECU we now support in the 2022+ WRX so we -should- be able to add support relatively easily. It’s on the list for early 2024. Once support is available, you would need to have the part number of your Accessport changed to SUB-005. Our Customer Support team will be able to help you with that when the time comes.


  5. The Ascent has now been out for a good while 2019-2024. I wish you guys would make a Cat-Back for them. Am not sure how many you need you need to sell to make them.

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