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  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)
  • https://youtu.be/vWqLSvSOzCo
  • Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi (STI-4G-S2-18+)

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    Stage 2 Subaru STI Power Package By MAPerformance | 2018-2021 Subaru WRX STi

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    Email - sales@maperformance.com

    Phone 1-888-627-3736



    $ 850.99   $ 945.99
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    2018-2021 WRX STi Stage 2 Hard Parts & Tune Package By MAPerformance

    We are excited about the official release of our Subaru STI Stage 2 Performance Package which, when combined with the included Stage 2 optimized Accessport Tune (currently 2018 models only), is a very potent performance upgrade! Throughout the R&D, testing and calibration phases of the EJ powered 2015+ STI platform, we have been thoroughly impressed with the performance gains from each hardware modification. Better yet, our MAPerformance STI downpipe and air intake systems were designed to support considerably higher power levels allowing for future growth; the included USA Made performance parts support power levels any bolt-on turbo upgrade can throw at them!

    When comparing our MAPerformance Stage 2 power package to a stock STI running our Stage 1 Tune, there are many advantages far beyond the improved sound and raw power. Not only are the power and torque gains inherently impressive, but it’s also important to note how much less work required from the turbo and less stress on the engine to achieve the higher power levels. 

    Disclaimer: This product is intended for off-road use only. As sound level and emissions laws vary based on location please consult your local authorities for additional information.

    2018-2021 Subaru STI Stage 2 Kit Features

    • Capable of 331whp/347wtq (+59whp/+58wtq over STOCK!)
    • 304 Stainless Steel Components
    • 100% Mandrel Bent Piping
    • 3" Piping For Improved flow
    • Fully Tig Welded and Back-purged
    • USA MADE

    Applications

    What's in the box?

    Installation Instructions

    Warranty

    • MAP Limited Lifetime Warranty

    2018-2021 WRX STi Stage 2 Hard Parts & Tune Package By MAPerformance

    We are excited about the official release of our Subaru STI Stage 2 Performance Package which, when combined with the included Stage 2 optimized Accessport Tune (currently 2018 models only), is a very potent performance upgrade! Throughout the R&D, testing and calibration phases of the EJ powered 2015+ STI platform, we have been thoroughly impressed with the performance gains from each hardware modification. Better yet, our MAPerformance STI downpipe and air intake systems were designed to support considerably higher power levels allowing for future growth; the included USA Made performance parts support power levels any bolt-on turbo upgrade can throw at them!

    When comparing our MAPerformance Stage 2 power package to a stock STI running our Stage 1 Tune, there are many advantages far beyond the improved sound and raw power. Not only are the power and torque gains inherently impressive, but it’s also important to note how much less work required from the turbo and less stress on the engine to achieve the higher power levels. 

    Disclaimer: This product is intended for off-road use only. As sound level and emissions laws vary based on location please consult your local authorities for additional information.

    2018-2021 Subaru STI Stage 2 Kit Features

    • Capable of 331whp/347wtq (+59whp/+58wtq over STOCK!)
    • 304 Stainless Steel Components
    • 100% Mandrel Bent Piping
    • 3" Piping For Improved flow
    • Fully Tig Welded and Back-purged
    • USA MADE

    Applications

    What's in the box?

    Installation Instructions

    Warranty

    • MAP Limited Lifetime Warranty

    Customer Reviews

    Based on 15 reviews
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    J
    J.H.
    Great performance upgrade

    I was on the fence for a while because I kept reading you couldn't get both downpipe and intake without fuel upgrades but after extensive research you can especially with the tune they have it's safe and power difference is night and day I love it so far

    c
    c.s.
    Perfect!

    This item added so much more response and power to my 2019 STI! Absolutely love it and the welding and quality is honestly amazing! Had it on the car now for about 8k miles and it’s doing awesome. Slight fitment issue with the air intake. It’s a bit long and hits the chassis reinforcement but if you work at it you can get it to fit!

    J
    J.E.
    Perfect add one for the money.

    Was kinda curious how this would be because I’ve not seen many reviews on 2020 sti’s. I was the lab rat for everyone. It’s been great so far. My injector duty cycle has not been over 93 and usually runs around 90 at WOT. Keep in mind I daily this vehicle and don’t beat on it very hard. I do plan on upgrading injectors and the entire fuel system in the future because I want to make more power safely. Love the kit.

    C
    C.B.
    Great products!

    The stage 2 kit was a huge upgrade on my 2019 STI. The power is amazing in S# and super responsive. Highly recommended!

    R
    R.
    Amazing performance for the price.

    I want to thank MAPerformance for their awesome service and workmanship on the parts. The intake and downpipe transformed my STI from a good car to a great car. The downpipe was swapped in 3 hours and the intake in less than 30 minutes; everything fit easily without issues. The tune is excellent. I wish I purchased these parts a long time ago. Again, thank you MAPerformance for your service and over delivering on your promises.

    MAP Limited Lifetime Warranty

    1.) All MAPerformance in-house fabricated parts include a Limited Lifetime Warranty for the Original Purchaser. This warranty only applies to the original purchaser and is non-transferrable. If the product fails it would need to be determined by MAPerformance that it is due to manufacturing defects in materials or workmanship.

    2.) This does not cover normal wear and tear. Improper use, modification, or abuse voids this warranty. MAPerformance will not be held responsible for additional costs due to the failure of a product (cost of sale, towing, labor, etc.). Warranty claims must be submitted to MAPerformance for review.

    3.) You must create a support ticket to acquire your return authorization number prior to returning the product.

    4.) Warranty claims will not be honored if the product was not purchased through an approved dealer.

    For warranty evaluation please create a support ticket via this form here.

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