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  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)
  • https://youtu.be/vWqLSvSOzCo
  • Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi (STI-4G-S2)

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    Stage 2 Subaru STI Power Package By MAPerformance | 2015-2017 Subaru WRX STi

    PART#
    We Price Match!

    Contact us to ensure you're getting the right part for your car at the absolute best pricing on earth!

    Email - sales@maperformance.com
    Phone 1(888)627-3736



    $ 850.99   $ 936.99
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    this item typically ships in 3-5 Days. this item typically ships in 10-14 Days! Free delivery by , to your door when ordered within hrs and mins
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    2015-2017 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, 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.

    2015-2017 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

    • 2015-2017 Subaru STi

    What's in the box?

    Installation Instructions

    Warranty

    • MAP Limited Lifetime Warranty

    2015-2017 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, 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.

    2015-2017 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

    • 2015-2017 Subaru STi

    What's in the box?

    Installation Instructions

    Warranty

    • MAP Limited Lifetime Warranty

    Customer Reviews

    Based on 33 reviews
    94%
    (31)
    6%
    (2)
    0%
    (0)
    0%
    (0)
    0%
    (0)
    A
    A.P.
    How a modern STi should come from the factory

    Over the years Subaru hasn't done much to increase the power of the STi to keep up with the rest of the market. I purchased this package along with an exhaust and AOS for my daily driver. It has been the perfect setup for a fun, reliable daily, with a relatively small amount of money invested. I would recommend this to anyone picking up a new STi looking for an easy an convenient bump in power.

    E
    E.S.
    Unbelievable Bolt-on Upgrade (2017 STI)

    I started with a Cobb Catback, then added an AEM intake. Those two performed very well,even without an Accessport (no CELs). I was looking for the next step, so I Installed Accessport Stage 1+ with the AEM instead of the Cobb big SF. It was a HUGE decrease in performance, and the Intellimode was disabled, so I went back to stock and was happy for a while. I had the Cobb Downpipe, but was uninspired to put it in after the bland COBB tune I tried.

    MAP had dyno results that far exceeded the COBB stage 2, and were able to tune it with an intake, as well as keeping the Intellimode open for selecting intelligent/sport/sport#. Black Friday gave me a deal I couldn't pass, so I bought the Stage 2 package with tune. I uninstalled the AEM, threw on the MAP intake (very easy), and installed the Downpipe (Moderate, but only in time needed-youtube videos showed every step and gave me confidence and good direction). Added the Tune that was included in price, and followed directions carefully.

    It is in every way what I wanted. It is mild enough for Daily Driving behavior, but if you want to go, it PUUUUULLLs all the way up to 6krpm. The difference from stock is shocking. the difference from stage 1+ is significant. The sound is thoroughly sexy, but not over the top. Their video is pretty much spot on.

    Sell your other parts... this is THE bolt-on upgrade for the 15-17 STI. I can attest!

    I
    I.
    2017 STi Limited w/SPT exhaust

    I enjoyed my stock STi for 2 years. I always felt like the pedal was touchy. I enjoyed 1st and 2nd gear pulls but 3rd gear and on was okay. Didn't really pull that hard after that.

    I had test driven a 2019 Camaro SS and Mustang GT. I remember how it felt after 70mph. It pulled hard. Something that my STi lacked a lot.

    After Stage 2+ and MAP tune, my car has awoken. My goodness. I have turbo noises, whooshing noises and I even have crackles and pops from the catted downpipe matted to the SPT exhaust. The car is smoother to drive, throttle is less jumpy, and car pulls hard all the way to redline. Do I recommend this kit? Absolutely. Right away? No. Enjoy your car stock and appreciate the differences. I also enjoyed the Cobb stage 1 tune for a bit but there was a drastic difference with the parts installed.

    Additional comments:

    1. Intake sits low but not too low to worry about hydro locking. The underbody tray blocks splashing so no need to worry about that. Under normal driving, you can really hear it which I enjoy. You step on it a bit more, you hear it. You really floor it and beautiful noises!

    2. Downpipe. Beautiful welds and top notch quality. You need the grimspeed adapter to stock exhaust. My SPT with catted downpipe sounds like the Q300 but deeper. OEM heatshield won't fit so you lose it. But you don't need a turboheat shield unless you have track days or you abuse your car everyday, and need to keep it as cool as possible.

    3. Comparisons: Does it pull as hard as a GT or SS? No. But the difference is not that much anymore. I would say that instead of feeling the power drop after 70mph, you feel it drop off after 100mph. I have gained an extra 7-10mph in the quarter mile. Trap speed at 107-110 instead of stock 100-103. But how often do we go above 100mph?

    4. Final comments: Buy this kit. They are the only ones with a tune for a downpipe and intake, nobody else does. With anybody else you need a custom tune. Press buy now!

    C
    C.B.
    Awesome!

    Anybody with an STI should install this kit, what a difference! Materials and workmanship is top notch, I was very happily surprised when I unpackaged it all. Installation was straightforward and everything fit as if it was OEM. Performance gains were just as surprising, throttle response is much better, the extra power is awesome in what was an already fun car.

    B
    B.
    This Is How It Should Be

    Had enough time to install the Stage 2 and it’s a night and day difference. The response in S# makes the little kid in me grin from ear to ear. Great product quality, best salesman (Tony), and overall a great buying experience. Will definitely buy from you guys again. Hurry up with a Stage 3 package, pretty please lol

    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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