2015+ Subaru WRX CVT Upgrade Path

XRT Recommendations: Modification Scheme for 350-400whp


Fuel System

Exhaust System

Intake System

Boost System

Oil Recommendations: Motul

CVT Transmission Cooler: Tru-Cool LPD


22 responses on “2015+ Subaru WRX CVT Upgrade Path

  1. Keishaun Norgriff

    Hi, I have a 2015 forester XT. I want to upgrade for more power but it’s my first car with cvt and I’ve been reading a lot of issues with the cvt with added power.
    The mods I want to do are:
    Mishimoto Charge pipe
    Mishimoto Intercooler
    Mishimoto catted downpipe
    Invidia N1 exhaust
    Hayden 679 transmission Cooler
    Engine oil cooler

    How much max power could I get out of this without blowing the transmission? And is there any other mods I could do to the transmission to take more power?


  2. Alex.

    I am new to the wrx car community. I have a stock 2016 wrx CVT limited. I want to tune it just a little bit. I want to get the invidia exhausted. But I don’t want to blow my transmission. Is there any recommendations or points I can get?

  3. Tanner

    Hey, I was wondering what whp and torque number id be getting with my mod list:
    Invidia catted downpipe
    Mishimoto CVT Cooler
    Grimspeed Intake
    Grimspeed EBCS
    Perrin Chargepipe
    Invidia N1 Dual Exit Catback Exhaust

    A tuner I was talking to said he would make it 280whp 260tq purposely limiting it but I want more power than that, any suggestions?

  4. Aaron D

    I was jus curious, an had a question about the suggested mod path. You guys have a dw300c fuel pump listed, if one isnt adding flex fuel capabilities, what is the purpose/benefit of upgrading the stock fuel pump?

    1. XRT Post author

      If you do not have any issues with the pump, you can continue as normal. It is to provide longevity for Higher flow.

  5. Aaron D

    I have a 2017 wrx limited..CVT..tuned with these mods I’m making 280 Tq/300whp on 93 octane
    Cobb V3 AP
    Tmic/charge pipe
    Catted jpipe
    3-port ebcs

    1. Aaron D.

      Finishing off the exhaust to a complete turbo-back will put me ovr 300 all around..after that, one could add Flex Fuel capabilities..an you would be well into..I would say 330 maybe..not sure..but at the point I’m at..a transmission cooler will need to be added. I can honestly say that with where my cvt is now, is a great increase over stock, it’s like the engine has been uncorked. This is what these cars should be like from factory.

  6. James Skarzenski

    With these mods and stock cvt you guys are getting 400 whp? I am getting 316-330 whp and have all these mods plus a 5 inch FMIC and F1 Motorsports high torque converter upgrade. Do you feel the stock CVT can handle 400 whp as a daily without issues?

  7. Thomas

    Hi my names Thomas I drive a 2019 CVT Subaru WRX and I’ve been looking to build my car to be around 400-450 whp and maybe 400 tq. I guess my main question is how much it would cost roughly to go from stock to there and is it safe to do so. Without blowing the trans obviously.

    1. XRT Post author

      The CVT may not last so long due to design limitations. When modding the Subaru to this level, we prefer to use other software that allow us to adjust the torque holding capacity of the clutches.

      Regardless, you may have issues with the cvt belt and clutches.

  8. Adam deltoro

    Very interested in extra ponies on my txt, have herd of lots of horror stories with cvt. How long have you been testing this?

    1. west_minist Post author

      Testing what?

      Our testing is for good function. We custom tune for you and the car. Not all cars are the same.

    1. west_minist Post author

      We were not aware at the time of such mod, even working with owners who were heavily modded

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