The MOST Power You Can Make With Your 2015+ Subaru STI (Reliably...)
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- Опубликовано: 24 сен 2020
- We recently made a video showing you how to make power on your 2015+ WRX and we had a bunch of you guys ask us to make one for the STI! So, while the process is very similar, we thought we'd show you guys how to make some RELIABLE power with your 2015+ WRX STI!
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How much power are you making on your STI?? Let us know down below!
How to make power safely. Sell STI. Buy Evo X. Make 400hp on stock turbo.
I have an 06 sti with around 400 hp
481 whp and 471 torque, type ra on a mustang dyno
392 whp and 464 torque on a mustang dyno with stock block 16’ STI
@@maverick021981 Your ringlands will blow soon. Sorry Bud. Happened to me at 350 WHP. Save yourself some potential damage and drive like a granny or get forged pistons and other beefed up internals ASAP.
2008 STI peaked at 350 whp and 360 tq before I had it detuned to 320 whp and 330 tq. The detune was to reduce injector duty cycle and increase reliability. Engine let go 8 years later with 216+ thousand miles.
What upgrades/tune were you running ? Those miles are impressive lol
Cool. What set up you had? That’s impressive still.
What’s the longest time you held WOT without lifting to shift or whatever reason.
Aka: did you ever hill climb it at 120mph+ or hold WOT for more than 10 seconds? And no if you lift to shift that’s a different scenario where oil gets to the crank more easily so im asking a different question
Damn!
I’m in the market for a sti rn and I’m terrified. I needed to hear this thank u
This type of intro is something to look into... out of all the videos I've seen from this channel, this is the best one yet.
The car ripping in the beginning?
the best power comes from weight reduction even if it’s just the seats. it feels really light (even if in a technical sense, it’s nothing)
Thanks for the little shout out! Love the products my STI running great!!!
Thanks for the awesome video! Glad to hear it!
I got your stage 2+ package on my STi. No knock! It's perfect for daily driving and the canyons. It pulls harder. I suppose I'm making around 300whp.
Awesome! It's a great package for sure. Keep it up!
If ur making 300whp then ur almost maxing ur injectors out, I have a pro tune stage 2 15’ sti and I’m at 80% injectors at 279whp 297 torque
Hi. Great video. Very informative. I just fitted an Agency Power cat back exhaust. Feels like more power already. Next step is just what this video showed
Glad it helped - thanks for watching!
Coming from a 2020 wrx, not sti motor was replaced at 28k and 29 stock, with oil changes 3-4k exc except for one with 4200. Very reliable.
YOOOOO!! Big s/o to you guys putting my vid in here! Hopefully I’ll be able to create some more content using your products. Cheers 🤙🏾
Of course! Thanks for the video, loved it!
I have a 2020 STI. I'm keeping her stock on the engine. Only goodies I'm adding would be for MORE reliability. AOS, ETS top mount. Mishimoto rad system, etc. If i decide to tune it'll be a fully built longblock drop in. STI is really tight on the tolerances and I want to drive her as long as I can. She's plenty fast in stock form to get in tons of trouble.
Strait to the point... short video . No bullshit. Thanks !
Thanks for keeping it real and not flexing a high number... this is why your parts are on my wife's car.
The Mustache immediately adds 25 hp to any setup.
haha
Been pushing 451 to the wheels for over a year now on stock block. Upgraded turbo and fuel system full e85. 378 on pump gas. Get a protune not a ots or "off the shelf" map tune. Yimi motorsports santa clarita. Mustang dyno
Prove it or it’s B.S
pull up when can run it? How much you pushing to the wheels? Always down to race 🏁 stay near so cal?
Dropping my sti off next month, same mods same power estimate. I can't wait
@@1ledp621 not bs, this is totally feasible. I'm pushing my stock block to 376whp. Hell, Bader pushes the stock case to 500whp with forged internals
@@j.p.3972 hahahah funny thing 4 months later my 2020 stock motor sti is making 400+ also 😂
4b11t owners watching this video: "I came here to laugh at you"
😂
Lmao
Does the downpipe have 2 cats and are they high flow cats I can't seem to find the answer and thats the only thing holding me back from the maperformance stage 2 package for my 17 sti
21 sti 322whp 318 tq - Shinji tuned, cat back, Cobb aos, bpv, redline intake, turbo inlet, koyo rad radiator, cylinder 4 cooling mod, iag oil pan kit, Grimmspeed top mount kit.
Im on my 4th subaru wrx/sti. Stock is the best, most reliable. My current stock wrx has ZERO issues. I can’t say that about my buddies subaru.
For the new wrx the stock tune is actually really bad for the car
made 360whp on a mustang dyno on a stock motor, grimmspeed turbo, and every supporting mod (tomei ti, catted dp, AOS, c4 cooling, oil pan, fueling)
Have a ‘21 STI, tried searching your website for either a package deal or the parts to make this happen, with no luck. Do you have the stock for this still? I realize the video is 8 months old.
I own a 2019 STI and I've watch a lot of these kind of videos. I don't think upgrading the STI to make it faster is worth the money and risk. I'm keeping mine stock. I didn't buy the STI for impressive 0-60 times or for racing. I bought it for the all wheel drive and overall amazing 1990s connected feeling to the car and road. No other car feels like an STI. You have to drive one to understand.
Same as you. I have a 2020 Series White STi and the only thing done is a Cobb Catback, and that's it. When I worked at a Subaru dealership I saw so many engines grenaded by poor tuning, and that was 15 years ago. I feel its even worse now with every person with a laptop is now a "Tuner"
@@kamiumitv Do you notice a MPG difference on E85?
Well said. I have a 2017 base model wrx and my next car I s an STI. I am not going to upgrade my STI when I get. Stay safe brother.
From experience, you're absolutely right. 2015 STI bought new in 2014 for about $45k. Since then I have blown the motor twice. Once was covered by warranty and was Subaru's fault for using trash crank bearings. The second time was after I started modifying and had 350 WHP on stock turbo and motor. It was ringland failure. Since I bought the car I have spent at least $55k repairing it and trying different upgrades. I could have bought a very fast GTR for $100k. My STI is still not as fast as I want it to be at 466 WHP. It's a huge disappointment and the worst waste of money in my life.
polyscient wow, that is a horror story. sorry to hear this.
2019 STI 314WHP Torque 385 protuned coob sf cold air intake, MA down pipe
Subies forever guys. Great video.
I have your stage 2 + on my 15STI, and I can confirm that come late fall and winter you will max out the fuel system on 93 octane. 120% IDC on WOT. I upgraded to 1050x injectors and 340lph pump and now hit 330wph 340tq at 60-70% duty cycle now.
Yeah you need injectors and pump to hit 330 WHP for sure.
Do you need a retune after installing the 1050x injectors and upgraded fuel pump? Or use the same MAPerformance stage2 tune?
@@paul_17sti you need a protune for injectors, the MAP tune is for down pipe and intake only, fuel pump doesn’t require a tune but once you have all the fuel parts together just get a protune
Are these number on a dyno jet or mustang dyno?
It will.make that power with any aftermkt dp and intake with cbe. Obv they will say theirs cuz they work for MAperformance.
330 HP & 340 ftlb
I agree. I blew a ringland at 350 WHP on my stock turbo with a tune by Cobb SoCal on Flex Fuel. I was autocrossing and had plenty of fuel injector and pump. Engine internals need to be upgraded above 330 WHP.
ive heard of so many horror stories with these cobb tunes- ill never understand why people keep doing it to themselves.
@@deezelkane it’s a Cobb pro tune
did you have a higher volume oil pan and cooler installed for autocross? Sloshing is a big problem on these cars.
Don't use ots cobb, I repeat don't use it. You will blow your engine. There not tunes specifically for your car.
I make 321hp 345ftlbs catted DP and catt back exhaust, mishimoto top mount, panel filter, custom tune on 99 octane at 1.25bar. Standard Injectors and fuel pump are fine upto 390-400hp here in the UK.
Damn you and your 99 octane!! (The fuel here is shit!) - BC Canada
@@VanIsleNuckFan I think our 99 octane is the same as the US 95 and our 97 is the same as your 93. But we have a different way of rating the octane. We also have a few garages near race tracks with 102 octane, but I've never seen or used one. However, my car was mapped (custom tuned) on 99 octane, but I always add a bottle of octane booster to every tank. So I'm always running 102 octane. 😎
@@christopheredwards357 I'm embarrassed to say that the best we get on Vancouver island is shell 91. We have 94 but ours is cheap and loaded with additives so ends up being worse detonation than the alternative. I've got an e30 tune also, so its not THAT bad. ;-)
@@christopheredwards357 Its an ACN 91
Im probably gonna keep my sti stock other than cooling mods and an Accesport for altitude
2020 STi owner here.. got 10,000km out of my stock engine before the ringlands went - Subaru only offered new block replacement with a 2 month wait but wanted me to cover labour due to having a cat-back exhaust and 'over-revving' the engine. I said no thanks and had the engine built with forged pistons and so far so good! Love the car more than ever despite the disappointing factory engine being far too fragile for this day and age
Thought the 19+ STI have much stronger internals??
@@GR8GUY54 that's what the salesman told me too but clearly not strong enough.. I know a handful of guys that work for Subaru dealers and they said they have hardly seen any bone stock '19 onward STi's come back for engine probs - only ones with exhaust or tune mods. It's disappointing when a factory engine can't even take the tiniest of mods like most cars can
What did they consider over revving what RPM? My 15 sits amazing at 60,000 runs great. Have put 10,000 problem free miles on it
@@Dragunov302 redline is 7000rpm and they had a computer recording of 7200rpm which they consider as over-revving
I woulda fought everyone in Subaru
What I will say about the subie community is it's a mixed bag. There's stereotypes for a reason the young kids with a vape will run an ots, down pipe, intake, b.o.v, unequal length headers(it gets hot in there)no oiling or cooling mods on a stock block blow it up and blame the car...... Which is why I won't associate myself with the subie crew in my area. Bought my car knowing what it is and I'm modifying it accordingly. ie you gotta pay to play..buy it nice or buy it twice my dudes
Do one of these for the 10th gen civic si PLEASSEEE
0:01 how you setup the launch control to bounce on the rev limiter? when i do it, it just revs out.
iam using ots stage 1 91
Do you have Cobb Accessport V4? You need to set your launch control RPM in the menu. Try 5000 and go up if that's not high enough.
Do you mean 330hp at the crank? I got stage 2 on stock boost only got 262hp at the wheels
How is the intake in rainy conditions? Do you guys sell a box to protect the filter from getting water in it? Or is the design protective enough to not allow water in
It gets wet
For the downpipe does it need to be catless or can it be catted aswell? awesome video btw thanks for the work you guys put in to make this tune reliable for these EJ's
Our downpipe is only available in catted, thanks for watching!!
I bought the stage 2 power package. Waiting for FedEx right now. I assumed the tune came with the complete package. I already have the access port so... does the tune come with the package or do I have to buy it now too?
You fill out their form on the website and they’ll send it to you to load on your ap 👌🏼
Great video.
Glad you enjoyed it
If you're looking to buy this power package, PLEASE do yourself a favor and get bigger injectors + a pro-tune. Just an intake and downpipe will make a "safe" power number, but in reality make your sti far more susceptible to inherent subaru failures. Reliability comes with reliability mods, such as an Air-oil separator, turbo heat shielding for intake temps, equal length headers and or cyl 4 cooling mod, and a bigger intercooler. Don't let this company fool you
Well said
stock sti.....should i worry about ringland failure?
Is the ots tune compatible for 2021 sti? I don’t see it in the website
We do not have an OTS tune for the '21.
This is too good to be true. Over almost a 100 hp increase with just a down pipe and intake?
You're right about that.
It's only ~ 50hp with a stage 2 lol
@@Haylem they taking at 350 WHP, stock STI is around 260 WHP
@@boisetkai they say stock they come with 265/270 whp n wtq. this stage 2 says capable of 331whp n 347wtq. So das around 60whp. Still sounds too good be true imo but we dont kno how much there actually maxing it out to. Intake should give like 10hp max nd downpipe shud be like 20/25. I guess the tune cleans up that extra 25/30 hp/tq lol
Stock injectors and pump is more than enough for 330whp and 340 torque ???👀
Bruh i dont believe that stage 2 package can add with just intake and dp 60whp and 70 + plus torque..... I m 2019 STI stage 2 owner and with 310whp and 328 torque IDC is 107% on full throttle !!!!. Summer time it drops till 98% ,its maxed out already....
Whats the magic with MAP ?? Can you share please 😆
Yess thank youu
stage 3 sti package whennnnn :( yall said it back in 2019...
AN AOS IS A MUST!!!!!
Also a great suggestion!
I'm confused, the '21 STI is producing 310hp stock. Are you saying you can only add 20hp before you start running into issues? That seems like a super low ceiling.
Those numbers are probably crank hp. I'd say stock whp is closer to 230.
560whp - 450wtq 2007 sti. Honestly, after 400, it’s just not safe lol.
2016 Sti, 385whp going strong after 30k miles
Should say 15-18 STI, 19+ got the RA block with better ring and bearing tolerances. They hold hella lot more power reliably than any previous year. Coming from a performance channel, you definitely missed the mark on this one. Emphasis needs to be driver mod properly installed. 5th Gear Automotive in Nashville Tennessee has 500+ whp 19+ STI still on the factory block. Once you control boost properly, fuel and turbo upgrades to support the power.
My son's 19 STI dynos at 350whp, cat back and SF intake only. I feel like this is the second video you guys made missing the mark biggly.
Hey there, nashville local and 19 sti owner, thats the reason i went for a 2019 as well for the upgrades you mentioned. Thanks for the info about 5th gear i will look into them, keep spreading the well informed subie info man. Well said,
19+ do NOT have the RA block. Subaru aren't stupid. Your sons 19 also does not make 350whp with catback and SF only. My 19 Sport Tech STI with the same mods, same year, on a Dynojet makes 258whp/310wtq on 94. Welcome to reality. To get 350whp, you need a fuel pump, regulator, 1050x injectors, intake and a turbo back exhaust. Lie much?
@@stephen9944 look it up, all info and part numbers state otherwise. 19+ comes with RA block
@Stephen 19,20 and 21 did infact come with ra block :)
@@dannykennedy5885wrong
doesnt the 2019+ STI have slightly stronger internals?
It has the 10103ad020 block instead of the previous 10103ac890. The only difference is the pistons as they're from a different manufacturer, but keep in mind they're still cast made. I've already seen 19+ STIs blow up like every other b4 it from the typical mods most dumb ass owners do to them .
@@BP-fx3qc I can attest to this. 19 STI went boom after intake downpipe catback fueling and EWG
@@ran97396 I'm sorry to hear that mate.
@@ran97396 bad tune?
@@mengdynasty6034 protune could’ve been better but it’s the piston ring that gave out. Apparently after 07 they started using cheaper material on the rings.
Its the access port need to be connected all the tieme ..to keep maps with not getting deleted..
Nope. Once flashed, the accessport can be removed.
Thanks for your reply .
I head from a few sources that u shouldn’t do a intake and downpipe on the 15+ ….. anyone have an explanation
Why not?!
Dynoed 330 HP in the US equates to around 300 HP here in Australia
HP is HP.
@@stephen9944 no our dynos read differently
Max RELIABLE hp? 230hp
What about 2007?
I just got a new ‘21 STI and it’s slowww lol. Will this stage 2 void my Subaru warranty??
Unfortunately, I would guess it would void your warranty.
@@maperformance I know that the tune would but I’m more wondering about the intake and downpipe. I’d just uninstall the tune before going to the dealership. Do you think the intake and downpipe would void the warranty alone?
@@FreshlySnipes of course a new intake and down pipe will void warranty you just changed the design/characteristics of the engine (warranty covers stock from factory not mods) plus uninstalling the tune won't work anymore either they're hip to that now even if you re-installed OEM intake and down pipe. just accept the fact that as soon as you change and/or tune your engine say goodbye to the warranty. they'll even void your warranty now if you hit red line even when stock they're cracking down.
How much for the whole kit
Starting at about $850 without the Cobb Accessport!
When you say 330hp converting that to whp the car gain 24whp might as well stay stock.
Can you do a wrx
Already done and posted!
I am still stock but a cat back
So the same as a wrx but these are 10k more!!!
Super cringe at 0:59. I don't think the intercooler doubles as a tool shelf guys. Nice way to bend those fins!
Making 390/409 AWHP/AWTQ in my 2014 STI. E85 makes things a lot safer.
“Reliably”
EJ25 pushing over 330whp: 😅😅😅😅😅
i know ,just get a 2015 direct injection fa20 wrx and run ethanol and make close to 400whp
If power was the only thing that mattered there would be no reason to drive anything that wasn't powered by a V8 at least. So sure, while you can mod the FA to 400whp, it will never be an STI. The STI is just flat out a better performance car overall.
Phil Nash yes sti is the better overall driving experience
@@billmesh that's why they are getting rid of the EJ and the new sti will have the FA24 😬
@@ranran2218 I'm not going to infight about WRX vs STI. The differences are well documented and not limited to just the engine.
Dont know I dont have any money to get my motor installed lol!!!!
425whp cobb 20g flex fuel stock motor
still running?
330whp or 330hp? Cuz 330hp is only 20 over stock... which sucks...
face it dude you wanna get 350hp+ you're gonna need a built block ....that is if you want it to last for a while.
@@redpillpusher I have a 2021 which means I have the type RA block from the factory and reinforced pistons so I should be able to handle more…
@@Gii1234 ...oooo niiiiice :)
But 2019 is different form a 2018 Reinforce Pistons
no they aren't. Don't listen to youtubers, ask a pro.
Has anyone done this with a cobb dp & Cobb intake?
That’s what I’m wondering Cobb says their downpipe only with their stage 2 tune maxes out injectors.
I got told I needed an external wastegate to run both on cobb parts.
Shout-out BaylorOG
This is a bad tuner recommendation. It’s widely known you must upgrade injectors if you upgrade downpipe and intake. Injector duty cycle is probably at 99% lol.
I thought exactly the same thing. Plus no engine will ever perform the same. I would never use a pre program tune
About 20 hp less than stock for a Subaru ;)))
In a world where these b58 wasily make 450whp 😢😢😢😢
Making 369hp and 385ft-lb
305-330 is not a CRAZY power jump
extremely conservative
What i got from this video , Sell Sti buy Evo X , enjoy life
Trying to upsell people on the intakes.... for shame...
liked my WRX it was great.....but when it comes to adding power, too many sacrifices...sacrifice low end torque to make some more peak HP...no thanks, Got a Kia Stinger GT1 , JB4 tune, 416 WHP 500WTQ
stingers go hard in a straight line but I bought my STi to go around corners...fast.
Do what he said; add flex fuel kit from Cobb, killer headers, oil pick up and baffle, 1020 ejectors I think, plus all the other supporting mods. Add whatever reliability mods you like as well.
Now go to YIMISPORT in SoCal. Let him do the rest. My STi makes 365 whp and 465 wtq on the dyno when it was 103°.
It’s been tuned for 5 years and 45k now. Not a drip!
It’s not worth it plus y’all lie on the website it says 330 WHP on this video y’all say 330 HP stock STI makes 260 whp and 305hp honestly it felt like 315 HP not 330 at all I’m hella disappointed I wasted money on that stage 2 I also said this on Instagram and y’all didn’t say anything
A little confused by your comment here, our stage 2 93 octane tune is good for up to~300whp, we always use wheel horsepower. That can vary depending on where you live etc etc. Our stock car made 272whp / 288wtq.
dam i feel sorry for subaru owners, my bone stock turbo k20 at 12lbs of boost making 380 whp with 220k miles & still pushin😂😂
For real. You want power you have to build the block. STI is a beast of a car if you do that. Built blocks are actually reasonable and are comparative to a built K20.
its easier just to go with the direct injection 2015+ wrx with the fa20. you can make close to 400 wheel on ethanol with these motors running an ethanol blend of about e60 with the cobb flex fuel sensor and pro tuned. the sti ej motor is kind of a dinosaur but the fa20 motor will race your 380 whp k20
@@ironmandingo1 if your just going for a power number sure get the FA20 wrx .... sti still a better car ..
All the 2021 STI boys just sitting here waiting and licking our lips.
Evo owner here...what the hell is a "stage 2"
It's a cobb thing we wouldn't understand. But it's when you get a set of upgrades to match these tunes saved on the cobb tuner
Stage 1 and one level up. Duh
What a joke. STI’s are trash as far as building/power and takes way to much cash to build them. I regret spending 20K on mine.
Meanwhile a frikin Evo with an intake and exhaust makes 30whp with out tune. I agree our cars are trash when it comes to modding
So pretty much buy a evo instead lol
Wanna make reliable power?
Step 1: Dont buy a subaru
LOL
Because vaping clowns throw crap parts at it? I've had 10 Subarus since 1999, and none have ever had an engine failure, but they have been pretty much stock. Strange.............
Shits weak son
Do something different. Buy 2015+ wrx. 6 speed swap it and mod the shit out of the fa20 engine. 🤣
Better option is buy Sti and if it goes boom get a fa20.
1st
Sti guys are thinking why did i pay so much more for the sti when the wrx makes more ez reliable power
though it’s true, i’m definitely not thinking that.
If you wanna make easy power wrx if you wanna make big power sti
No one is thinking that champ
No one who owns an STI wishes they bought a WRX. It's the other way around.
Everyone's right, till they all realize they should've just bought the evo showing them tail lights instead.