2015 WRX Tuning Results : 344 WTQ / 313 WHP

We have enjoyed seeing all of the 2015 WRX custom tune results being posted around the ‘net and decided to jump in with our own after a bit of playing around with our car on the Austin R&D dyno today. While this combo of parts isn’t likely to be an pre-configured OTS “StageX” package that is available from us, we try to do as much hard parts testing as we can to make sure we have a good understanding of the cars. It’s important for us to have knowledge over how the car will react to common aftermarket upgrades. No records or anything crazy but this thing is definitely one quick WRX now!

We bolted up all of the airflow mods we have on-hand for the car and decided to see what she could do. A bit more time to continue refining the tune would have likely yielded even larger results, but I quickly “chickened out” after realizing how close we were to 350 wtq.  It is likely that the connecting rods will prove to be the long-term weak spot for modified FA20DIT cars, so we decided to call it an afternoon with our engine still intact for now.

Engine/Power Modifications on our 2015 WRX consist of the following: COBB Tuning Accessport V3, COBB Tuning Turboback Exhaust, COBB Tuning SF Intake/Airbox, and a COBB Tuning Front Mount Intercooler Kit, and a COBB Tuning 3-Port EBCS.

**5/8/2020 – Updated Dyno Chart***

15WRX-Stage3April12020-93oct

 

Results vs stock vehicle: +77 wtq (28.8%) , +62 whp (24.6%) 

At this point this car is now making a tad more torque and horsepower than a Stage2+Intake 2015 STI on the very same dyno — very impressive for a 2.0L with the diminutive factory turbo. We are slowly beginning to really like these cars now as the uncorking process continues.

Long term, this testing helped us identify some other areas of the factory ECU where we should focus our future reverse engineering (table/logic discovery) in order to provide the precise control and ease of tunability that the COBB Protuner network demands, even as the power numbers get crazier and crazier as new mods become available over time. We can’t wait to keep pushing this platform and seeing what kind of amazing results you guys achieve over time!

Thank you for your support during the DIT craze!

Cheers

The COBB Subaru Expert Group


COMMENTS
Scott on December 9, 2014 says:

Awesome work guys! Completely happy with my OTS maps, although arguable to some, it’s transformed the vehicle. Can’t wait to go stage 2 as well and protune!

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Daniel on December 9, 2014 says:

what are the rims/ spec, also lowered on what? Car looks excellent!

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    Marshall
    Marshall on December 9, 2014 says:

    Hey Daniel, unfortunately I’m not sure what the wheel and suspension specs are as the picture was submitted by one of our contributing photographers.

    Marshall@COBB

    Reply
Loïc on December 9, 2014 says:

Crasy! Are these numbers show crank HP or a Wheel HP?

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    Marshall
    Marshall on December 9, 2014 says:

    The numbers displayed are measured at the wheels.

    Marshall@COBB

    Reply
Jordon on December 10, 2014 says:

Nice results! But when I click the link for the Turboback exhaust, it brings me to a password protected page that I’m not allowed to view.

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    Marshall
    Marshall on December 10, 2014 says:

    The exhaust hasn’t been released quite yet but should be available in the next week!

    Marshall@COBB

    Reply
nick on December 10, 2014 says:

Nice. Can’t wait for the exhaust & OTS map. Any idea what you guys are putting down with just a tune & catted turboback?
Also, what are the plans for the intake in the future & how far away are you guys from releasing it?
Turbo back sounds nice btw

Reply
    Marshall
    Marshall on December 10, 2014 says:

    Hey Nick, our Stage 1+TBE map is making 282whp/319wtq on this same dyno. We are still investigating an intake and airbox system for the car and are hoping to have that available early next year!

    Marshall@COBB

    Reply
Josh Taylor on December 10, 2014 says:

Will you be selling a catted downpipe allowing us to connect to the factory option SPT exhaust or will Cobb only offer a full turbo-back setup?

-Josh
Owner, RightFootDown.com

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    Marshall
    Marshall on December 10, 2014 says:

    Yes, The COBB J-pipe will include an adapter plate that allows it to be used with any catback exhaust utilizing the factory spring bolts and donut gasket.

    Marshall@COBB

    Reply
nick on December 10, 2014 says:

Marshall, very nice. I believe that power/torque will be coming earlier on in the curve. Is this going to positively or negativity affect highway mpgs?

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    Marshall
    Marshall on December 11, 2014 says:

    With making the engine more efficient, you may see a slight increase in MPG. Of course, that requires a tame right foot. ;)

    Marshall@COBB

    Reply
Jonathan on December 11, 2014 says:

Are these power numbers SAE Corrected?

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    Marshall
    Marshall on December 11, 2014 says:

    Yes and no. Our calculated correction factor has been around 1.0 with the weather we’ve had recently. The most important number to pay attention to is the delta, as that holds true with our without a correction.

    Marshall@COBB

    Reply
John on December 11, 2014 says:

Are you using a mustang dyno oemr a dynojet?

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    Marshall
    Marshall on December 11, 2014 says:

    All of our COBB Shops use Mustang Dynamometers.

    Marshall@COBB

    Reply
David on December 11, 2014 says:

Anything for the cvt wrx

Reply
    Marshall
    Marshall on December 12, 2014 says:

    Working on it!

    Marshall@COBB

    Reply
Nick on December 12, 2014 says:

Any Factors that should be considered when deciding on a purchase between the j-pipe & Turbo back? is the gains in power significantly more? do we loose any weight? Or is this similar to a cold-air & provides a non-restrictive great sounding option to the car?

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    Marshall
    Marshall on December 17, 2014 says:

    Power differences should be negligible with an aftermarket catback exhaust. There would not be any tuning changes associated with the addition of a catback.

    Marshall@COBB

    Reply
Nick on December 15, 2014 says:

I am ready to buy the j-pipe but theres no maps available for it like it says on your website. Im confused. Where is the map for just a j-pipe + accessport ? I have people on the forms asking the same questions. Thanks

Reply
    Marshall
    Marshall on December 17, 2014 says:

    Hey Nick, you should be fine to use an upgraded J-pipe and factory catback exhaust with our Stage1+TBE OTS maps!

    Marshall@COBB

    Reply
('14+) COBB Accessport for SJ FXT - Tuning Results Thread - Page 10 - Subaru Forester Owners Forum on December 15, 2014 says:

[…] I would suspect not as there is a sensor to detect the TGV position for feedback to the ECU. http://blogs.cobbtuning.com/2014/12/…uning_results/ Last edited by DIT; Today at 03:46 PM. DIT is offline   Quote Quick […]

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Cho on January 4, 2015 says:

When is the v3 assessport going to come out for 2015 WRX with CVT?

Reply
    Marshall
    Marshall on January 5, 2015 says:

    CVT WRX support is the next large release for our Subaru group. We do not have an exact release date set quite yet however we are hopeful to have it available very shortly!

    Marshall@COBB

    Reply
Josh on January 8, 2015 says:

What is the link for the Stage1+TBE OTS map as noted in the blog? Thanks.

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jim on January 25, 2015 says:

Will any of the above mentioned upgrades perform well without adding a flash from AP? For example if I want install tbe and/or tvg will the wrx still run good without tune?

Jim

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    Marshall
    Marshall on January 26, 2015 says:

    Jim, most modifications to these cars will require tuning. The only part that really does not require additional tuning would be a catback exhaust. As you replace any of the other mentioned parts, the amount of air flowing into/out of the engine is changed (increased) and must be accounted for with tuning.

    Marshall@COBB

    Reply
Trent on January 27, 2015 says:

Any information or details specifically around the gains seen with the addition of the TGV deletes? I’m wondering if they are a worthy addition to the other mentioned modifications.

Reply
    Marshall
    Marshall on January 27, 2015 says:

    Hey Trent, we did not perform any before/after testing with the TGV Deletes specifically so I cannot comment on their individual gains. As a whole, this combination of parts produced impressive gains however a stock vehicle.

    Marshall@COBB

    Reply
chris on February 2, 2015 says:

Curious if you also upgraded the injectors and fuel pump or can the stock injectors supply enough fuel at these levels? Thanks.

Reply
    Marshall
    Marshall on February 2, 2015 says:

    Hey Chris, we were able to achieve these numbers with a completely stock fuel system.

    Marshall@COBB

    Reply
roberto munoz on February 15, 2015 says:

what exactly would need to be done for my 2015 wrx to be up in the 300’s

Reply
    Marshall
    Marshall on February 17, 2015 says:

    In order to reach these power levels you’re looking at really freeing up the intake and exhaust paths. A higher octane fuel will certainly help as well!

    Marshall@COBB

    Reply
Tim on February 28, 2015 says:

Is Cobb going planning to do a j-pipe for the wrx cvt version anytime soon? Or even an OTS map for a j-pipe for the cvt version?

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    Marshall
    Marshall on March 2, 2015 says:

    Yes! We should be releasing our CVT J-pipe very soon along with accompanying OTS maps!

    Marshall@COBB

    Reply
Elwyn on March 5, 2015 says:

Any update on how the rods and internals are holding up or issues?

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    Marshall
    Marshall on March 5, 2015 says:

    Our car has been holding up without issue (knock on wood). I think as people increase torque significantly with E85 and larger turbos we’ll likely start to see more failures.

    Marshall@COBB

    Reply
Justin on March 6, 2015 says:

Any word on when Launch Control will be available?! Eagerly waiting for it! Also any update on a CIA?

Reply
    Marshall
    Marshall on March 9, 2015 says:

    Both projects are at the top of the Subaru Expert Group’s priority list. I would expect to see Launch Control available around the end of this month with the intake following closely behind.

    Marshall@COBB

    Reply
james on March 6, 2015 says:

Hi man. so I have flashed stage1 93 tbe mishimoto cai currently and I’m really hoping there is a map developed to add the tgvd. If not can it run without tuning or do I have to get a protune.

Reply
    Marshall
    Marshall on March 9, 2015 says:

    Hey James, that’s likely not something we will offer an OTS map for. The TGV deletes will require custom tuning from a Protuner.

    Marshall@COBB

    Reply
Rick on March 7, 2015 says:

Any update on the intake for the 15 wrx?

Reply
    Marshall
    Marshall on March 9, 2015 says:

    I believe we’re moving forward with a new prototype this week. Should have a concrete ETA here shortly.

    Marshall@COBB

    Reply
Rick on March 7, 2015 says:

Also, what about an E85 flex fuel controller for the wrx?

Reply
    Marshall
    Marshall on March 9, 2015 says:

    This is the next big software task for the Subaru group. Hoping to have a full solution available very soon!

    Marshall@COBB

    Reply
JD on March 18, 2015 says:

Hey Marshall, thanks for all the support. Rumor has it…Subaru has included a flash counter in the 2015+ WRX ECU’s. Is this something Cobb can confirm?

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    Marshall
    Marshall on March 23, 2015 says:

    As far as we know, nothing has changed with regards to flash counters.

    Marshall@COBB

    Reply
Austin on March 23, 2015 says:

Does the COBB AP have any effect on gas mileage for the 2015 Subaru WRX? Also, does it have to be plugged into the vehicle to function or can it be removed once installed?

Reply
    Marshall
    Marshall on March 25, 2015 says:

    Hey Austin, most users tend to report a small decrease in MPG simply because they’re enjoying the new found power. Having taken our shop 2015 WRX on a few road trips, I can tell you that overall mileage is not affected, and if anything improved a touch. Once the Accessport is installed to your ECU, it does not have to remain connected. Many customers do utilize it for datalogging or live monitoring, but it is not necessary for the unit to be plugged in for normal driving.

    Marshall@COBB

    Reply
Raymond mohwinkel on March 23, 2015 says:

Any guess as to what kind of quarter mile a 2015 Wrx with this power would run? My 09 with 265 whp on a mustang dyno went 12.4. Think 11’s are possible with new car?

Reply
    Marshall
    Marshall on March 25, 2015 says:

    I imagine mid-high 12’s will be the norm. Someone with a “driver mod” may be deep in the 12’s with a similar setup. ;)

    Marshall@COBB

    Reply
Justin on March 27, 2015 says:

When is Launch Control going to be released?!

Reply
    Marshall
    Marshall on March 30, 2015 says:

    We don’t yet have an exact ETA, hoping by end of April though!

    Marshall@COBB

    Reply
Justin on March 30, 2015 says:

Hoping sooner than later!

Reply
John Smith on March 31, 2015 says:

Where these results run on a Dyno Jet or a Mustang Dyno?

Reply
    Marshall
    Marshall on April 1, 2015 says:

    Hey John, these dyno runs were made on our in-house Mustang Dyno.

    Marshall@COBB

    Reply
Kent Siefman on May 17, 2015 says:

Hi guys, Just checking in again to see when the Cobb CAI solution will be available for the 2015 WRX, I know back in early March you said an ETA would be available soon. Patiently waiting! :) Any new updates? Been several months now since the last comments on this solution.

Thanks

Reply
    Marshall
    Marshall on May 18, 2015 says:

    Hey Kent, unfortunately we still do not have an ETA for our 2015 WRX intake kit. In the meantime, we do offer OTS quality maps for the Mishimoto and ETS intake kits.

    Marshall@COBB

    Reply
      Kent Siefman on May 27, 2015 says:

      Hi Marshall, I’m not finding the OTS maps for either the Mishimoto or ETS intake kits. Under maps for 2015
      WRX anyway. Are they on another site?

      Thanks and keep up the good work

      Reply
sven engmann on June 2, 2015 says:

I just picked up a 15 WRX 6MT just under 2 mths ago. I have some tings I would like to do to it, trying to get an idea on what type of output I will end up with. Interested with Cobb AP, TGV Deletes and J-Pipe w tune. To start will be Cobb AP, once I ad the other parts is there a tune I can move to above that which is supplied by the Cobb AP purchase? I am reading guys so bare with me as I learn about the add ons. I am in Canada and planning to run 91 octane. Appreciate the feedback.

Reply
    Marshall
    Marshall on June 5, 2015 says:

    Hey Sven, we do offer Off The Shelf(OTS) maps for a variety of configurations. We currently have Stage 1 and Stage 2 OTS maps available for the 2015 WRX. You can read about the maps we offer in our Map Notes document found at the link below!

    https://cobb.app.box.com/2015-WRX-map-notes

    Marshall@COBB

    Reply
Jon Hill on October 15, 2015 says:

I spoke to a gentleman a day or two ago in reference to an upgrade path. After reading this entire page, I’m curious as to when we’ll see the intake.

There are several comments about “a month or two” and “soon”, but still no dice. Do you have a slightly more firm time frame? I’m going to hold out for that kit or just go a different direction entirely.

Reply
    Marshall
    Marshall on October 20, 2015 says:

    We did have some issues with finalizing the design. Luckily, we’ve signed off on the final design and it has been in production for a few weeks now! Hoping to release the intake and associated OTS maps in the next couple of weeks!

    Marshall@COBB

    Reply
Timothy Olinger on October 28, 2015 says:

Someone last asked in March how the engine internals and rods are holding up. Can you provide an update with this setup and how many miles have been driven like this? I plan on doing all of these mods with the exception of the TGV deletes and I don’t want to have to build the block.

Reply
    Kyle
    Kyle on October 29, 2015 says:

    Hello,

    The car currently has about 8k and is still as strong as ever. We actually took it to the track last week for a company outing and drove it very hard for about 20 minutes at a time on about 10 different occasions. The car performed really well with no issues.

    Kyle@COBB

    Reply
Mariusz Pachowski on April 4, 2016 says:

What kind of wheels you guys have on it? Brand? Size? Looks nice.

Reply
    Marshall
    Marshall on April 4, 2016 says:

    We actually got the picture up top from one of our photographers so I’m not sure what wheels are on it.

    Marshall@COBB

    Reply
garrett murray on June 8, 2016 says:

i had the stage1 ots map and it felt great ! but now i have a mishimoto intake and the stage 1+ and it sounds great but it honestly feels slower? any suggestions ? did it download wrong , or somthing ? i dont know but i expected a more noticable power gain

Reply
    Marshall
    Marshall on June 9, 2016 says:

    Hey Garrett, there will not be any significant power gains between a normal Stage1 and a Stage1+Intake calibration. The map files are essentially exactly the same aside from the scaling required to safely run the intake. Is it possible you may have an air leak? Have you data logged the car to see if it’s running rich (or lean)?

    Marshall@COBB

    Reply
Angelo Trapatsas on June 17, 2016 says:

I purchased the 2016 WRX MT 3 months ago and attended the Subaru WBM in Connecticut last weekend. While there I purchased an Accessport. Loaded the OST Stage 1 93 octane map and the car feels great. Much better drive-ability and linear power and torque. Do you have dyno results for stock VS Stage 1 93 octane?

Reply
    Marshall
    Marshall on June 20, 2016 says:

    Hey Angelo! Glad to hear you’re enjoying the new found power! We do have average gains published in the Map Notes, you can also find some actual power output numbers on our Dyno Database.

    Marshall@COBB

    Reply
mauricio paredes on July 1, 2016 says:

do you know the power/torque (wheel or flywheel) capability of the stock connecting rods on the 2015+ WRX?

Reply
    Marshall
    Marshall on July 5, 2016 says:

    Hey Mauricio,

    We generally would not recommend relying on the factory connecting rods at power levels beyond 350wtq. Some have been able to successfully surpass that level by easing into torque instead of chasing after a very high torque spike at low RPMs.

    Marshall@COBB

    Reply
mauricio paredes on October 19, 2016 says:

thanks for the advice. how much weight can be shed with your turbo back exhaust?

Reply
    Marshall
    Marshall on October 21, 2016 says:

    Hey Mauricio, the cat-back section of the exhaust is actually about 9 lbs heavier than stock (41 lbs vs 50 lbs). Unfortunately, I do not have a factory j-pipe on hand to weigh.

    Marshall@COBB

    Reply
Lou Klein on January 2, 2017 says:

Curious if you have the whp and torque numbers yet for the 2017 to run reliably? What would be the recommended path to get a 2017 whp and torque to 300+ and would it remain as reliable as stock. The car would get no track duty. Just street use and a daily driver.

Thanks

Reply
    Marshall
    Marshall on January 3, 2017 says:

    You can reliably make 300hp/300tq with minimal modifications on a 2015+ WRX. Most cars will make that power level with a simple Stage 2 setup consisting of an upgraded intake, Turboback exhaust, and a tune.

    Marshall@COBB

    Reply