How to Build a 400whp 2015+ Subaru WRX 

Stage 2 with your guys’ j pipe and intake. Going to get the charge pipe and tmic from you guys soon. Then tgv/egr deletes

500+

I'm running your Stage 2 (J Pipe an Intake), love how much different it feels! I did however pick up a ETS air box to use with your intake an man it brings my intake temps down to almost ambient temperature while driving.

Grimmspeed downpipe, chargepipe, intake, tmic, ebcs. Egr & tgv deletes. Magnaflow catback & boomba bpv. E-Tuned by PhatBotti. Idk how much power I'm making. Still wish it was faster lol

Wtf is a stage 1 or 2?? Idk why subaru owners always say stages. Just name your mods its that simple.

Yes my 2004 wrx 2.0 made 387 stock block stock heads big turbo and FBO on e85 and It drove super hard for about 4 years and just recently the driver side head started to rattle so yes its possible its all stock made almost 400hp abused it everyday I drove it. Doing an IAG block now.

@@abbas674 You got lucky. Popped a 2.0L @ 340hp, a 2.5L hybrid @ 380hp, and a non AVCS 2.5L on e85 with forged internals @500hp. I will admit i got almost 85k out of the 2.0 though. The most exciting was the final one. Best we can figure is we got case flex, which caused the forged rod to snap and go through the block, splash oil all over the turbo and catch fire. It would have been a real disaster if i wasn't on my way to a BBQ and had a cooler full of ice and beer in the trunk I used to put the fire out, haha. After pulling the top mount I could reach down and grab the crank.

@@dyingbreed5386 yeah dude I was using amsoil I believe that helped keep it alive

Good thing I have a sleeved short block

So basically he’s saying “ your not that guy pal”

Exactly

@Josh Yates I think he was suggesting after mods. Not stock, but who knows. Tuning these cars has a tiny margin of error, just a slightly bad tune will demolish your motor. No one with these RU-vid videos gives you the plain and simple reality of nodding these. If spend 2000+ in performance and get 20k miles then i blows or something, the wtf is the point.

Too funny 😂

@@remissiveslave 24 psi isn't stock lol. He meant the motor was stock, as in no forged internals.

@@remissiveslave seems like youre talking about an ej? nah?

You're satisfied with slow? I guess people are just different.

@@ucnhtmenow1 lol facts!

@@ucnhtmenow1 ey man its almost as if cars have qualities other than speed in a straight line and can be enjoyed depending on the person's goals.

for a daily yes for a race car no.

Anybody hating forgets that this isn't a race car. Its a 4cyl compact. Until you dump boat loads of money in it'll never be a race car

Mods?

With stock turbo?

@@DanielMartinez-vw6bs FP blue Turbo but on stock boost, we didn't want to risk anything until I drop my block in.

E 50? What other mods?

@@romanlozano6854 e85, the nostrum fuel pump doesn't require mixing 93/e85, but the power gains you see from e60 to e85 isn't nothing to brag about and at my local gas station we get e77 content year round anyways. The mods I listed will take your car to 400HP very easy, just get a good tuner so you don't meet uncle Rodney because they give you some crazy torque curve. Edit : Unless your an enthusiast like myself, $13,000+ to get 400hp is a little out of this park, I myself have been considering selling my WRX and moving to the Supra, easy 500hp for around 5k.

15-22 psi depending on the time of year

That's kool I'm pretty Impressed with mine the turbo comes on really smooth only thing I want to upgrade are my brakes WRX are so sick I wish my girl understood what turning flat means lol

@@flpmedia2312 they don’t realize feeling G’s is a good thing smh. Everyone wants an SUV. Learning to drive smooth isn’t a bad thing tho. But I’m still too scared to practice launches

Literally just an E30 tune got me to 328hp

Ummm, sure?

@@MadeinOregon503340hp with stage 1+ 😂😂😂

What’s FBO mean?

@@SuperEman500 full bolt on

Glad to help!

Honestly I can't even call it a block it's like a 2 piece clamshell...🤷🏿‍♂️

I don't see why people that want to go fast don't just build the motor anyway. Then again, maybe not everyone has $5k to build an engine.

@@ucnhtmenow1 because naturally everyone is going to have a different use case and goals as well as budget, so its not always necessary. Ive had an iag 2+ hawkeye that only made 415ish at the wheels, and theres at least a few stock block stis that push more power than that. Some motor platforms dont require a build for twice that amount of power

AOS?

Nvm lol

Si Will be the next to be featured here. Please make it happen

Dont worry, I own a aventador and still watch subie vids

@@Gchang54 yea sure and i own a billion dollar company in silicon valley, foh.

@@BP-fx3qc I guess it's hard for some to decipher sarcasm

Because you don't want to be gay anymore?

Update: It finally broke a rod and blew a hole through the block 😢.

This made me laugh

@@Dave-so7sf this is why idiots shouldn't own cars, he abused it trying to flex

@@AndrewB23 Nah he knew it was going to blow up. Your only an idiot if you modify a car and don’t have the money for a new motor. He’s replacing that motor with a fully built one.

The car is loyal to you it's the love we put into things and the bond we make also good quality parts help

No cap, mine is at 118k with all of that, stock block, 2nd clutch, been at 400hp+ since 22k.

Yup the true reliable boxer for Subaru’s

@@youknowsanchez it’s always a roll of the dice. you’ve been lucky id say

Red 2020 WRX. I did all these mods (except fmic which tuner reccomends) and got 365 whp on a conservative tune. It's like a new car and yes, it should come this way from the factory. Gary Baines tuning.

Car still running fine?

You’re just unlucky lol

You made only 40 extra hp and got rod knock, your tuner is trash

@@AndrewB23 the car has 265 crank hp and hes at 344 whp.. Do you even maths?

@@AndrewB23 40 extra ? You mean like a 125whp extra if not more ?

Damn how high was your torque? I know alot of pimple that have ran that for years and no issues but a clutch

Ha!

You must be mistaking this for an EJ25.

Steve hahahaha yeah not like these have EVER popped

@@NoootABigDeal haha yeah I'm just messing, i've owned both, will never own an EJ25 again though that is for sure.

RumpleForeSkins yea not like any motor in existence has never popped 🙄

Nice numbers, mods?

Full bolt ons with flex fuel on stock block. Tuned by Clark Turner over here in az

I’m same, 360whp on flex, 290 on 93 pump

Wish we had 93 over here. Thankful for E

What stabilizer you using?

What.....

Glad you think so! Thanks for watching!

Dont

Do

Let us know how it goes

Hopefully you follow our build!

144? lol

@@christopherrogers8316 :/ fr how did he manage to remove so much horsepower like damn.

how do you only have 144? the car comes stock with 268

Much appreciated, thanks for watching!

Interesting... I definitely feel it should be more than that haha. A good E40 tune would get you an extra 30-50hp but you should be pushing pretty close to 400 at that point.

A year later, after speaking to numerous tuners they literally all say the same thing "sounds about right" 298hp 300ftlbs. My biggest mistake was believing your hype.​@maperformance

Well the WRX new is under 30k. Got mine brand new for 28k out the door. And going stage 2 which includes intake, downpipe (j-pipe) and exhaust is, at the most, 2k. Then with pro tune is another 3-5 hundred depending where you go. Then I’d go intercooler, charge pipe, and bpv for probably another 1500 at most. So all said and done, with the price of the car, parts, and labor (tune) I’d say it’d run about 37k at the absolute most to get any where from 350-400whp which, as long as you don’t abuse the car, will run as long as you do regular maintenance such as frequent oil changes and walnut blasting every 20-40k miles.

Which in that point I do agree that you could’ve gotten a base GT Mustang, RT Challenger/Charger, SS Camaro for that price new. I don’t agree with people dumping a bunch of money into these WRX’s with the intent to go fast in a straight line. Cost too much and that’s not what the car is for. I got roughly 300whp and 300wtq in my WRX and I’m totally content with it. It’s a mid 12 second car and handles like a dream. If I ever need more power I’d definitely get a used 5.0 or even hellcat or gt350.

Any rwd car is totally different from an awd subi, so at leat for me thats never a cross shop. GTR are ok but in that price range a porsche would be my #1 option.

No one is paying cold hard cash

If anything breaks on the Gtr or z06. It's gonna cost 3 times the amount you put into the wrx.

Ron is the goat, im making 360 whp on e60 from ron with the same exact mods except grimmspeed tmic instead of fmic. You really need some sort of intercooler upgrade to get to the 350+ range, idk why MAPerformance acted like it was just something you could do to help it out once it gets there.

I wish Ron was not sick and was tuning

Entirely different motor. Doesn't respond as well to ethanol due to lower compression than the WRX's FA. But the EJ is better for big power.

Trade up for a new Type R.

Shame. I live half a block from an e85 pump 😂😂😂😂

Yes please

Pretty much any aftermarket turbo bigger than Mitsubishi TD03, flex fuel, downpipe, intake, tune and clutch will get you to 340-350whp

330on 91pump gas

Agree!!!

You can make 350-400 on the sti with just a fuel system upgrade, and protune. No need for much else.

@@BP-fx3qc definitely, but I went the extra step further and got full exhaust, fuel upgrades and fmic 🔥💪🏽

@@luisg.taveras2436 nice, how much has the intake temp dropped on average with the fmic compared to the stock tmic?

Do it!! We'll help you out and answer any questions!

We don't do any installations on customer cars. I would recommend asking a local subaru FB group and see where they take their cars for this kind of work!

same man, any chance you find a spec?

@@briangonzalez1533 im currently planning on making my motor last longer with longevity supporting mods like air-oil separater and things to help keeping it at cooler running temps couse this past summer was too hot for the car.

I have about 300whp according to my e tuner with just a catback and e30 tune on my 2020 WRX. Planning on going stage 2 e30 with MAP which just consist of intake and turboback exhaust. With there OTS tune it’s estimated to make 330whp with that setup which is more than enough power.

@@ZFA1738 yep ultimately 330whp is my goal too I just dont want to push my connecting rod too over the top. Even if I make 300-320whp i'll still be very happy.

@@omialmanza1900 be careful with OTS e30 tune. OTS maps can tend to run more aggressive than ur car likes at certain times and end up giving ugly knock values. Highly recommend getting pro tuned by Ron at Phatbotti tuning to make even more power than that and be safer at the same time.

Yes, E30 would be 30% of the gas mixture to be made up of ethanol.

Yes!

No. Depends on what year and what model (WRX or STI). 2019+ STI stock block can handle 500whp just fine. Ask me how I know.

Underrated question! I’d like to revive this and get an answer as well plz!

Hardly any at 400hp and I daily mine tuned with Phatbotti. At 500hp my friend recently blew his tuned with someone local tho.

I wish he was back in commission so I can get tuned by him

You can use a fuel mix calculator and pump both ethanol and pump gas into your car!

Header, Downpipe, Intake would be a good start before a tune!

I have a mishimoto intake and a tomei exhaust..

Hey Kevin, unfortunately without it being our parts 100%, the tune wouldn't work as designed. Could always replace the other parts to work if you wanted though! ;)

Not yet, ours should be coming within the next few weeks, so development can get under way!

Give us a shout! sales@maperformance.com

350-hp is a very reliable setup, but beyond that, you are taking some risks. Send us an email at sales@maperformance.com and we can discuss your goals for power and what mods are necessary to achieve that!

2015 - current year

Check out this video! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rHv5vM68r2s.html

You can disconnect the harness for the DRL's. Jist watch a c-light harness video for details on how to do it. It will only work once you wire up your C-lights though.

It's available for purchase here! www.maperformance.com/products/map-stage-2-package-2015-subaru-wrx-wrx-4g-s2?variant=30182471041094