2015 Subaru WRX STI + COBB Stage 1 Tune - Review

[@TurdFurgeson571]

He lives his life one on-ramp at a time.

[@EngineeringExplained]

Hahahaha

[@heroclix0rz]

Don't we all...don't we all.

[@EAS573182]

Subaru STi is supposed to be BLUE Lancer Evo is supposed to be RED These are universal laws! But this STi is still a damn beautiful sight to behold.

[@mattb9774]

KZbin Aneesh I have rarely seen a red evo, most I see are black/grey

[@EAS573182]

Matthew Broderick Maybe you've grown up in a different generation than I did. But red Evos used to be just as common as blue STis with gold shoes.

[@Zaiyetz]

Stunt Growtopia *wheels

[@Zaiyetz]

Stunt Growtopia No, gold WHEELS with black TIRES... Is English your first language, or are you just stupid?

[@Zaiyetz]

Learn the difference between connotation and denotation.

[@powerademonke]

Just picked up my 2018 STi two days ago and I love seeing you laugh every time you hit the throttle because I get the same exact feeling.

[@MendicantBias1]

We're told that more horsepower, dual clutch, fast 1/4 mile time, and different drive modes are what make a great car. Turbo lag, heavy clutch/shifter, unique flat four sound, and great visibility make the WRX/STi a better drivers car. Who cares if a car is fast if it isn't fun to drive anytime you want to? Try putting the power down on a wet road in a Mustang GT/Camaro SS. I'll take my Subie on a wet backroad any day over a faster car that is too heavy/big/numb to really enjoy. #LegacyBlitzen #EJ206

[@tom24gr46]

I agree. The fun factor is important. And the handling is important. More power would be good. The amount is has now is satisfying enough- more so than other cars with more power that I've Driven. I love my 2016 wrx (manual of course)

[@jonshuacaceres9828]

And that’s what makes a Subaru, a Subaru. Honestly it’s the best car I’ve owned. Love my boostedv4/v6 supercharged engines but something about THIS flat4 car that just makes you want to drive it all the time. Fast enough stock but after you get an access port and throw on some bolt ons for what it’s worth it’ll make you love this car even more. Can’t get a better experience and happiness In owning one. Highly recommend if your into Japanese cars also. The Subie culture/enthusiast are amazing!

[@OvernightCrew]

I love the pure joy plastered on this dudes face.

[@richsgarage5897]

+Scott Bond Thats me everyday I wake up in the morning

[@lostfound8112]

agreed i drive mine i giggle lol

[@inmymemory507]

After a sticker delete it would be perfect!

[@BP-fx3qc]

inmymemory507 but less stickers mean less power

[@iBroughtATentzx]

+5 hp per sticker so i've heard.

[@jaybosher6144]

Not worth voiding the fuckboy warranty

[@nwbklr]

No such thing as, “voiding” a warranty.

[@sidyagafamily4735]

Stickers are cool... if you're 16 and just got out of fast & furious movie in the year 2001

[@Krigarjonas]

That car looks so good in red.

[@abadmixtape]

the police LOVE red cars

[@SadisticOutcast]

***** Especially WRXs. www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=most+ticketed+car

[@gokartbuyer]

***** Why I love gray!

[@Toastmaster_5000]

Oh Herro I almost like it more than blue, but I'd gladly take either.

[@thunderbolt2000k]

+SimplyCRehZ Thats why i have it in blue and without the "HERE I AM" spoiler that calls police.

[@MichaelSnyder1990]

Thank you so much for making this video. Cobb's website tells us what we can expect, but seeing and hearing your deeply descriptive experience of what you felt changed is exactly what i was looking for. And thank you. for posting the 0-60 times!!!

[@tylerdowd]

i'm a subaru guy (own an 05 STi) but 305 hp for the 2015 STi is not enough from the factory for a car that is 40k

[@johngonzales3149]

My 14 evo gets 265 to the wheel... With tune got 317bhp and 353 btq... Only invidia n1 and test pipe ... Plus turned it up psi

[@johngonzales3149]

Turned it up 2 psi

[@tylerdowd]

2015 STIs should have 330-335 hp from the factory

[@SI0AX]

Outdoor Layne Buy the 2016 STI then find a friend with a 2016 WRX. Swap the engines. I don't know if they fit though.

[@YoitzMattV]

John GonZales what does btw mean ?

[@ChicoKj23]

Who puts narrower then stock aftermarket summer tires on a performance oriented car...

[@Bullitt1768]

Fender clearance

[@ChicoKj23]

Nothing like sacrificing performance for some sweet rims bro..

[@Bullitt1768]

ChicoKj23 yeah cus that extra 10mm of tire will make or break his setup, pfft.

[@ChicoKj23]

Enough that he felt he needed to mention it..It's alright, cause now his car looks sick bro

[@cars_and_coffee_by_bruno]

I would put on the rear to make it more tail happy

[@NorkusMartynas]

10:00 look at the shifter

[@Chaemings]

It was shaking his head while screaming help me lol

[@chris4540]

Doesnt know how to launch them right

[@briansmobile1]

Check out those guns at 9:15.... somebody's been hitting the gym! It's Jason.

[@waleedusman6744]

briansmobile1 yeah seems like so

[@squirlesg2228]

A 10 minute video about a sports car and all you noticed were his biceps LOL GAYEEEEE

[@briansmobile1]

There's no homo in acknowledging someone for their achievements in fitness. Nice car though, but I have to agree it would be better as a hatchback. These shine as a ski car, but not if your poles and boots won't fit in it.

[@the80386]

briansmobile1 *maybe he's hitting the gym but what you saw there was mostly wide angle perspective distortion of the gopro. Same reason why his hand on the wheel looks 2x bigger than his face at **9:29*

[@EngineeringExplained]

Oh my! Try to do a little rock climbing every now and then haha.

[@randyvalenzuela5336]

R.I.P clutch when he launched it😂😂

[@damiancobb8177]

You're welcome for that tune

[@MrSkarbek36]

A+ comment

[@stoneimage666]

Very impressive car! I own a 2011 WRX with a cobb stage 1 and I love it. Subaru and Cobb in the mix is a lot of fun. Great review of the STI!!!

[@dylanboyance3682]

do you run a cobb intake or just the stock air filter panel?😊

[@SmellyStains]

That steering wobble is noticeable on this car but I think it is the torque/brake vectoring doing its job. Hooking this car around a corner on the throttle will cause this wobble but that's the outside front wheel pushing the car and the inside front wheel slightly braking. You get used to it quickly and can turn in like no other stock WRX/STI model.

[@thedon9670]

That makes sense 👍

[@Russian5]

@2:12"Who cares." - Made me laugh.

[@charlesdigerlando9471]

I am a 2015 STi owner. I traded up from a mildly tuned 2002 wrx w/lots of suspension upgrades. I thought that his breakdown and description from the drive feel to the audio system was spot on. I would only add that my general feeling of the 2015 is that it is now an underpowered touring car instead of a tight cornering rally car. I do love it though. I think that with an aggressive tune and a wider open track it will perform better than the older models. I also think this has been verified in test runs.

[@edwinremudaro7953]

Cobb Accessport is a great way to start a mod. Installed an OTS stage 1 map on my 911 Turbo (991.1) without any bolt on mod. There are certainly noticeable improvement hp and torque.

[@pretzil2957]

I love subaru's! My fav year is 2005 with the rally blue and carbon fibre hood!

[@iandea14]

That's the Oregon historic highway in the Gorge, I used to drive there all the time. By far one of the best roads, especially if you can find a day without traffic!

[@mikezerkle1392]

That wiggle is because you had traction control still on, therefore the torque vectoring was still activated. The only way to have the vectoring switched off is turning the traction control completely off.

[@EngineeringExplained]

Mike Zerkle Traction control was off (completely), as mentioned.

[@mikezerkle1392]

At minute 2:00 exactly, you can see your dashboard warning for the traction control system is not on. So while you were driving through the twisties there the torque vectoring was on and giving that wiggle feeling you are describing.

[@jakefelty89]

You neglected to mention that the OTS maps from Cobb are best used with having Cobb hardware (exhaust and such). Was the STI stock? In the two videos I saw you drive that particular STI you had only mentioned aftermarket wheels. A Stage 1 Protune dl'ed onto the AP will show much better results than the standard OTS map for that specific setup. If you don't have a different setup.. full turbo back from say Invidea, then a Protune would be best suited over the Cobb OTS Maps. The AP is a great tool to use but to get the most out of your build, pay the $450 for the protune and have that map put on the AP.

[@Mikeb8134]

I love your methodical and very analytical approach to making videos (you answer the questions I wanted and the ones I didn't even know I wanted to ask). Please keeps them coming! Thanks bud.

[@chrisbowman7230]

It was awesome watching you drive the car after the tune. We can tell you were definitely enjoying yourself

[@Cinadel]

I'm waiting for the day Subaru starts making two door WRXs.

[@ODIOPOWER]

David F 1998 ;)

[@magicstix0r]

Cinadel You mean the BRZ?

[@Cinadel]

No, BRZ isn't AWD. More like the 22b Impreza.

[@ReLineGuy]

Cinadel if you enjoy the older styles 22b or even the R-STI

[@dukinygaming259]

Why????

[@numinous4789]

OTS tunes are also known as "canned tunes" in the tuning culture surrounding my platform (Mazdaspeed 3). They are generally frowned upon by those who know better for several very significant reasons. I'm not sure about the OTS tunes relative to STIs, but for Speeds there are many areas to be improved upon regarding the COBB OTS tunes, and not just regarding performance, but for safety too. Simply put, it's much safer to go ahead and get a full custom tune for your car. Then it's dialed in for your specific mods, fuel quality in the region, altitude, driving style, and many other important factors. It's also important to realize that no two cars are identical, even with modern day precision manufacturing techniques. For instance, you may have two identically modded cars that accept different levels of timing. I've tuned 8 or 10 different Speeds and can tell you that some cars are much more okay with raised timing levels, for instance. Other cars hate it and become knock prone, which is potentially extremely dangerous. Custom tunes will address salient issues like this. I personally went with FREEKTUNE because he's really well established and well regarded for the Speed platform. He actually does Suby's now too. Just food for thought. I personally would NEVER run an OTS map on my Speed. My setup is so exotic that no OTS maps would fit the bill anymore, but even before I had all the mods I currently have, I wasn't okay with OTS maps.

[@austinshatzer]

My Cobb stage 2 OTS tune was for a catted DP - mine was high quality, but Catless. Spiked boost constantly and blew the TMIC apart - swapped to a bigger TMIC and got a custom E-tune and it was the best thing I ever did, until Ethanol :-)

[@numinous4789]

austinshatzer Yeah, I have a 93 tune and an E30 tune as well. The ethanol blend tune makes 50 more whp/wtq! Ethanol really is an amazing fuel!

[@TassieLorenzo]

Zack Richmond Yes, but the car comes from the factory with an OTS tune. If the car is still stock, then I don't see the issue with an OTS tune at all... you're just changing to another standardised tune that is less conservative than the OEM tune.

[@numinous4789]

TassieLorenzo That's exactly it: the factory (OEM) tune is conservative enough for cars across the entire U.S. domestic market, including all ranges of altitude, fuel quality, and climate conditions. Because they have such a broad range of application, a great deal of margin is engineered into the ECU calibration for safety's sake. COBB takes away some of that margin in what they do, so it's intrinsically more risky. Granted, the risk in minimized when you have all stock components on the car. But how many people really run a tune like that? Usually people are going to have at least an intake and an exhaust. And on turbo cars, exhausts, in particular, are intrinsically very risky with OTS tunes because boost spikes and overboosting can easily occur much more readily. In my platform (Mazdaspeed 3), our community sees overboosting and boost spiking very, very frequently when folks try opening up the exhaust on OTS tunes, even with ones that are supposedly "designed" for freer flowing exhausts (Stage 2 maps).

[@numinous4789]

***** I guess it just depends how into modding you are. I'm sure there's a good number who just flash a new tune. The crowd of folks I hang with are all fully bolted, lots of upgraded turbos, etc., so that's a lot of what I see. I realize there are more types of people out there too, with regard to modding (or not modding) cars.

[@inuysha360]

How about a vid on rev matching, heel/toe shifting and left foot breaking? (they're all related)

[@charismacreer4487]

That wobble you feel while turning is from the brake pulsating which indicate the ASC is in work.

[@EngineeringExplained]

Hmm, no light shown so I don't think it's stability. Also it's a very light feeling. Perhaps the torque vectoring?

[@callanklimts]

does this review make you want to tune your '14?

[@djmv2002]

wont lie. when I first seen his videos I was like ehhh didn't think much. Definitely got my attention now. Nice review.

[@jimmylai7969]

As an engineer, can you tell if the Cobb tune is better for the longevity and reliability of the engine? I have a regular WRX and my Cobb AP is sitting next to me. I've got 1,600 miles on it and it's siren call is drawing me in.

[@EngineeringExplained]

+Jimmy Lai Adding power adds stress to an engine. There's no way to get around that. Stress reduces longevity.

[@jimmylai7969]

+Engineering Explained - Well, I was more referring to the stock Subaru tune. Cobb and other tuners say that they made their tunes more "safe". Have you had any issues so far or is everything running like it should be?

[@EngineeringExplained]

+Jimmy Lai This isn't my STI. I have not tuned mine, but its running great at 11K miles.

[@nhuber13]

+Jimmy Lai - I have had a catless downpipe and the Cobb Stage 2 + SF intake tune on my 2008 STi since 33K miles. Car is at 120K miles now and running great! Stock clutch as well, but that must be a fluke.

[@HutchCoRacing]

yes use your accessport. power doesn't add stress, using the power adds stress. so don't drive hard all the time and there's where your longevity comes from. my stock '04 had ringland failure. there are many factors but basically SOA's tune can get stuck in open loop fueling under high boost Low rpm conditions. this removes the knock sensor from the equation and if you don't have an ap you can't see the values spike and you won't get out of the throttle. Cobb made it better. I recommend it for all subie owners. that's just the surface of the problem but should help you out.

[@nwbklr]

You actually lose a little peak hp with that stage 1 but the power curve is much better. The biggest change comes with a large gain of tq. Think it’s 40-45. You can definitely feel it.

[@bbay3rs]

Thanks for the video, Jason. I ran the off the shelf stage 2 map on my 02, and I had many of the same comments you're making here. My 09 just ran outta warranty, so I think it's time to push it.

[@infidel900rr]

Hi, do you have any videos comparing piggy-back tuning to ECU tuning and what the main differences (pros & cons) are between the two?

[@curtisjmurphy]

Just about to purchase a 2017 STI so I watched this video and noticed what you said about the steering being flaky under hard turn in. Do you think it is due to the aftermarket wheel/tire combo? Offset can affect spring rate and result in the feeling you were getting. I have driven a car with spring boosters installed and it felt exactly as you described, it would bounce back and force a correction in steering.

[@iam2loki4u]

+engineering explained - watching your split eating grin is priceless - thx for your honest reviews and thoughts and as always your wisdom....

[@brettbarker7]

really love this type of review over the regular car reviews! any chance you could do this with a mazda speed 3?

[@armesisp3201]

Brett Barker I was thinking the same thing, the torque on those things are monstrous.

[@rwesneski]

Brett Barker That would be awesome my man!! Not sure if he would being that 2013 was the last model year produced but it would be cool.

[@brettbarker7]

I own a 2013 speed 3 and love it but id love to know more about it thats why i was hoping hed do one!

[@yellowglass2260]

I read somewhere that the cornering vibration/pulling in the steering is from the brake vectoring.

[@MYDADSTHEMAYOR]

Just a friendly reminder, dont ever drop the clutch on a launch, let the clutch catch a little before completely letting go for the launch!

[@realdave1120]

Not sure if you're bad at driving a manual or if the clutch is slipping

[@Benjay1975]

oh dear.. remove the blown sticker off the front bumper!!

[@Allinone_MMA]

The new sti's are seriously beautiful

[@marccandrift]

"Its an incredible machine" - Lance

[@CentaurianJsr]

3:06 that curb rash is so depressing to look at.

[@SUBARUSTI25]

Please explain why the owner would replace the OEM wheels with inexpensive STR rims that add weight and effect the scrub radius. Adding narrower tires as well? I just don't get it...

[@bradhowe9451]

Can you revert a tuned car back to stock for warranty purpose

[@alexlopez2995]

Yes. If I remember correctly, the stock tune is saved on the access port. If you want to revert back to stock, it's a simple as pressing a few buttons. When you get your car back from the dealer, you can put the stage 1 or 2 tune back on the same way you did initially.

[@alexlopez2995]

Just realized your comment was written two years ago. My bad lol.

[@a-lie-n]

@@alexlopez2995 other people could be wondering the same thing

[@MP-hi5hs]

For warranty purposes, the answer is no. The dealership is able to detect if an ECU has ever been remapped and WILL void your powertrain warranty if you flash it and attempt to have warranty work on it. Just a heads up!!

[@nwbklr]

Matt P that’s the beauty of a piggyback system over a flash.

[@S550_HB]

He didn't stop smiling when he was driving it with the tune setup

[@Tugboatpb]

Can you do this test with the 2015 WRX?

[@josevillegas9618]

so is the cobb tune a good investment what other modifications would you recommend to get more horsepower ?

[@austinshatzer]

Down pipe and tune is where you get the real gains for a first mod.

[@cyclonic7134]

God I love this channel. I just bought a 2018 wrx and I'm in love. I also didn't know you were in Oregon. I live around Portland, I'll look for you tooling around. =)

[@TheLukey21]

Where do you even get 91 octane, I think 95 is the lowest I've seen here in the UK but normally its 97 octane pretty much everywhere but I always buy 99 octane which is regularly available everywhere. So I image a tune for 97 or even 99 octane would have much bigger gains.

[@Jsbs1991f]

We use a different rating system. He has a video discussing that.

[@daniswift415]

91 is same as our 95 over here

[@rileymurphy5411]

Oregon is dumb, most gas stations don't have a 90+ octane fuel

[@Modupehsautowork13]

I'm not understanding why everyone complains about the power output if it's said to be very quick. Is it slow compared to other cars?

[@Sibsko21]

That red is absolutely beautiful color

[@droidaimone]

That grin after he changed to the stage 1😁

[@aaronp9835]

My old 2005 RSX TYPE S with top dollar full boltons, E85, Hondata, injectors, fuel pump, ignition, RBC intake manifold, ksport TB, custom Kport shifter kit, Clutch Masters FX250 cutch, 8.5 pound flywheel, carbon syncors 1-4th gear. Also have 17/235 Advan wheels, 4 piston 13in brembo up front and rotors, pads, lines in rear with ksport coilovers. 100% street drivable, 240 FWHP/170TQ and handles/stops amazing. Beats my cousins 2005 sti with intake, 350z’s all day along with others

[@stuna101a]

COBB makes you upgrade your fuel system (injectors,pump,rails etc) to have a CAI and downpipe with you tune. MAPerforamnce has better maps, you can get a cai, downpipe and tune with stock fuel system. Basically, COBB is conservative, they'd rather you spend another $2K on a fuel system and their tune with a cai and downpipe then have a map dialed in right.....

[@nigeljoycey5644]

I just got a 2019 sti after owning a 2013 previously, I can attest to the steering feeling strange when you are trying to hold a certain angle. It feels like the electronic assist making the tires go back and forth slightly its really strange. That being said, I feel like the handling over all is improved pretty drastically over the previous generation. The steering rack is way tighter. The tune in the newer ones is more sensitive to octane, etc. It will pull timing under boost if it doesn't like the gas or its not getting the correct amount of air. The 2013 I had was way less sensitive. I only put 94 in it but when I got the car the dealership put in I believe regular gas, and the car hated it. I was pissed when I asked them what gas they filled it up eith and they weren't sure.

[@dannykennedy5885]

There is no electronic assist on sti , it's hydraulic steering :)

[@Ahmad-Nader]

The car that puts a smile on your face is the car you wanna buy!

[@Junglist562]

I agree with Trent Hutchison. I have an 05 STi and you do have to really take your foot off if going WOT before you shift or else revs will ping out. Something I am still getting use to. As far as horsepower.... Japan sets HP limits on their cars for US models. What I found very interesting is the new WRX has "direct injection" bringing the HP at just shy of 260 with the STi at 305. Fuji Heavy Industries DID NOT do this for the STi model which would have shot the STi to around 350 off the assembly line. Which is what many would have liked to see. The difference of paying 9 grand more for an STi is not worth it. I was at COBB in socal watching this guy dyno tune his 2015 WRX. He had COBB cold air intake, TGV deletes, and a down pipe, with the custom tune was out $2,600 but gave him around 330HP. The direct injection should have been applied to the STi, but was not. Meh.

[@rodanakronym]

They need to add stiffer motor/transmission mounts. The movement of the shifter during that second launch is tremendous!

[@OiDavoMate]

can you do a video on dccd and how it works? i'm sure there's some technical stuff that would be interesting from an engineering perspective

[@chronic_adventure]

Engineering Explained this might have been asked before but what package sti is that? I don't remember seeing vortex generators on the roofs nor the black wheels. I'm not a fan of the new design but this one is growing on me.

[@TassieLorenzo]

Steering wobble? Maybe the car's wheel alignment. :) Perhaps they have dialled in a little toe-out?

[@cars_and_coffee_by_bruno]

It's the torque vectoring working... It nips the brake on the inside to help it corner

[@jrcu19]

+Bruno Danese How do you know it's that or are you just guessing?

[@cars_and_coffee_by_bruno]

jrcu19 I test drove one in winter on a snow track. You can feel it apply the brakes to help the car rotate.

[@sean9267]

Dang, wish there was a parts list for this car. Really like the look. See front lip, mudflaps, and the tires look different.

[@ShufflePetro]

Excellent camera views! Thanks!

[@miguelreyes9647]

Please review the 2016 whenever you can, been dying to see the interior difference and to see if there are power differences in a video of yours. Thank you

[@EngineeringExplained]

Miguel Reyes Interior differences will be minor, same power.

[@kieranmacleod3224]

Engineering Explained I was wondering about Straight cut gears. What are they and how are they better than "standard" cut gears? Could you do a video on that or have I missed it? Thanks and I think you're great at explaining complex things about cars, I've learnt a lot from you.

[@fraserlordly2432]

They aren't better. Straight cut gears are noisy and loud. They also have to be built larger and stronger than helical cut gears. They are better for racing applications, where you don't care about long term longevity of the gears. Helical cut gears have more surface contact area and can handle higher torque loads with smaller gears. And they are very quiet.

[@JakeTehCraka14]

This filmed in the Columbia Gorge? Looks like the historic highway.

[@frankyleandri3592]

Didn't previous generation STi's 0-60 anywhere from 4.5-4.8 seconds?

[@ricky041878]

Franky Leandri yes subaru improvements are usually backwards

[@TheAgentAssassin]

Franky Leandri A non-STI 2009 WRX does 4.7 seconds bone stock. www.caranddriver.com/reviews/2009-subaru-impreza-wrx-short-take-road-test

[@ricky041878]

the new wrx is slower than the previous one also.

[@Flewpygoober]

Franky Leandri I guess he could have held the launch control a little longer. Launch control is not only to hold your revs but also to build psi. If you have a full boost launch it'll be much faster. He briefly engaged launch control and dumped the clutch. However this was a pretty fair review. STi's being at 300hp for a decade is disappointing. Especially with cars like the focus RS coming out at 345hp from a 2.3L. That being said, hopefully it'll force subaru to stay competitive and up their power in future models! (coming from a 2006 STi owner btw)

[@Flewpygoober]

***** ya subaru needs to get a new motor. These EJ257s are so weak and as soon as you start making slightly more power than stock you can throw reliability out the window. 400hp would be amazing...

[@francois-thierryjacques9082]

Loved the 'I just sprayed the windshield because they changed the way the thingy works, who cares'. As I'm going through the same motions here, coming from a 2004 WRX to a 2018 Outback, this part made me laugh quite a bit :)

[@kk75113]

Hi. I have a question way out of the subject discussed. How long can I drive my GMC yukon 2011 before I change my Castrol oil 10w/30. I heard that it can take me about 10000 miles. What is the cut off for changing the oil. Thank you heartly

[@supercooled]

Hey Jason, can you review the 2015 Mustang GT? I bet that V8 Coyote will pack a bigger punch then the STI.

[@brianbowen295]

How does the gorge look now after the fire? I no longer live in portland, miss it every day

[@LETHALF90]

I wonder what a tuned wrx would be like against an sti stock

[@Intltkdktang]

Hello, may i please ask which rims are those, beautiful

[@marianhorniak5061]

EE what are your thoughts on 2017 Subaru WRX STI compare to 2015....? Thanks for your opinion. Want to buy one, trying to get more info or review on 2017, thanks

[@mcwendel8066]

Has the STI gotten slower? I had an 08 and I’m pretty sure 0-60 was 4.7 and 1/4 was 13.4. Now it’s 5.7 and 14.1? WTH?? I had a stage 2 tune and loved it but recently bought a 2018 GTI and am surprised to say i like it much better!

[@shafikdiwan1869]

Amazing car! Jason, do you have any input on reliability with the EJ257? I'm in the market for a new STi, but the interwebs is flooded with opinion on this topic. Ringland failures, spun bearings, etc etc. Are these things someone keeping the car stock, doing regular maintenance etc needs to worry about or is it all blown out of proportion from people abusing their cars and doing improper tunes??

[@mattjaneiro1202]

Wouldn't the torque vectoring and LSD cancel each other out? I'm a noob, please explain :'(

[@choyfamilyadventures]

Great review. Just wondering what your thoughts are to swap the STi wing for the WRX deck lid. I'm "older" and find the STi wing too - boy racer. Would it affect the driving dynamics/handling? Just prefer STi with the WRX deck lid. Thoughts?

[@TassieLorenzo]

dccaptcrash It's a functional wing for high speeds on track.... You can remove it if you want, but your car will certainly be less settled in the rear on high speed sweeping corners on a track day. :)

[@choyfamilyadventures]

Since i'll do mostly autocross and no high speed track days i could do a swap. Thanks for everyone's comment/advice.

[@RationallySkeptical]

Were the air intake and exhaust upgraded on this car? Because from everything I have heard as an Evo owner (Final Edition) Stage 1 means exhaust, intake and tune - not JUST a tune. (And sometimes an UICP as well.) My point is...I don't think this was a legit stage 1.

[@bkk3782]

Stage 1 is just a tune. Stage 2 is downpipe and tune (could also be intake and downpipe).

[@TheBigHammerz]

which of this two cars is better for someone's first car 2015 Subaru wrx sti or 2015 Subaru brz Series.Blue??

[@napoleonrossjr8414]

I have a 2021 WRX Mods: 1. Drop in air filter from grimmspeed 2. Post MAF hose from grimmspeed I’m currently running stage 1 tune 91 octane v400 from Cobb. My boost before tune even in cold weather was 18.9 psi now my peak boost is 16.8 psi. I do live in Colorado (Denver) at a higher elevation. I talked to a pro tuner he said try HWG map but Cobb is telling me that’s normal for my car. What are your thoughts on the matter?

[@flawns]

Have you ever made a video about throttle hang? I always wanted to know about this, why my Camry does this and my '68 Mustang does not

[@MalevolentCookie]

Probably a stupid question, but: Is there a way to tell if a wrx has a cobb stage 1 or a stage 2 package installed in it? The car has cobb ap and aftermarket exhaust, we're just unsure as to whether the exhaust is from a cobb stage two package or just a stage 1 with unrelated exhaust.

[@ghpatriot]

My stage 1 Golf R does 12.1 1/4 miles and 60 in 3.9-4. I love sti but why is it so slow for that much power?

[@carlosaguilar6643]

I have a 2016 Subaru WRX STI and I feel that Steering Wheel wooble as well only while cornering at high speeds ... how do you get rid of this little wooble/uncertainty you mention? I’ve had it aligned and told nothing is wrong with it

[@esley02]

Hello sir. What is your opinion on OTS maps for these cars? Many, if not most, drivers hate OTS maps and say that it's bad for the cars. Any thoughts on this or science that can back these claims? I honestly like OTS maps. I know they don't provide as much power as a personal tune from a tuner.

[@apunahasapeemapetilon9682]

i love when you calculated the g-forces at 8:00

[@gnarkilleptic4871]

Thinking about buying an AP for my 15 WRX. Will a 93 Octane Stage 1 tune be worth the $600? I plan on going stage 2 at some point but im not ready to completely throw my warranty out the door yet. I get that the AP will cause many warranty claims to get denied but im not ready to start changing major components of my car.

[@christianherrero8053]

Hi @engineeringexplained, I currently drive an Acura RSX type S and I am strongly considering this car and have a couple questions I hope you can answer for me. I autocrossed my RSX alot and will be doing the same with the STI. So question 1) If I'm coming from an RSX that has mostly all top end power to this, will the lack of low end torque in the STI be that noticeable? 2) How do the Alcantara seats compare to the Full leather seats? 3) Considering what car I'm coming from, will the Stage 1 tune help me with the low end torque in Autocross situations? Originally I planned on just getting the Car and keeping it stock besides stickier tires for fear of damaging the engine. However, this tune looks really enticing as its a very modest tune. On top of that I feel like the Kseries engines are like Rocks and the Ejs are fragile class haha so its making me a little scared. Thank you

[@JakeG895]

Could you put the new steering rack on your car? or has the chassis changed to much

[@TurboBMRProjectLove]

This car isn't a drag racer, its supposed to turn. you can see the smile on his face.

[@iMixedJuice]

I just tuned to stage 1 on my 2016 sti with after market wheels. More power yes. But at peak speed, I also felt a by of wobble on the steering. Wondering why, thoughts?

[@LFCooledWhip]

deciding on my first car. I don't know if I should get one of the newer WRX STI's or the older ones. I want something nice but I want to be able to put nice mods into it and work on it. HELP!

[@TheIrishPhantom]

That thing launches nicely. Well done.

[@EngineeringExplained]

Chance Dobbins Thanks! Basically cold tires, narrower than stock, and the road was a little damp. Still managed to haul! A little help from 3 LSDs haha.

[@KSWKREW]

Can you explain the difference between the Cobb stage one OTS map vs the Cobb stage one OTS map HWG(High Waste Gate) and maybe which is better for what reasons. Much regards

[@Jmontastic]

Just bought the 2016 wrx 2 days ago. When I press the clutch 3/4ths down, I feel and hear clicking. Did you notice this?