r/WRX_STI

▲ 4 r/WRX_STI+2 crossposts

Troubleshooting GC8 wheel and tyre combos

So I have just bought Rota sprints and have got a set of Yokohama Advan AD08RS tyres

The wheel sizes are

R17

7.5J

ET44

Tyre sizes are

215/45/R17

My worries come in if they will rub the rears and if I will have to roll them

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u/Own-Difficulty-7033 — 11 hours ago
▲ 24 r/WRX_STI

So thats why I was losing PS fluid..

Welp, this will be a fun repair. Anyone else had this issue yet?

u/Kinkywrx — 21 hours ago
▲ 10 r/WRX_STI

Help! Check engine STi 2013

Hello! I was going about ~95mph and I hit 6th gear and charged the turbo all the way and it spooled to 20psi and then I heard weird sound like a blow-off valve type sound and I immediately shift into neutral and the check engine, SI-drive and cruise control turned on. It does not let me change the SI-drive mode, it is locked and the cruise control won't turn off.

It shifts good, engine feels good, it revs good, no weird sound from the engine, sound healthy

List of mods:

Tomei unEqual length headers

Grimspeed up pip

Turbo smart External wastgate

Perrin front mount intercooler

Injen cold air

Perrin air/oil separator

Comp clutch stage 2

Invidia full exhaust with up-pip

Tuned for stage 2

R400 or Q300 (I know it must get asked a lot)

Hey all. After losing my 06 blob-eye a few years back, I've managed to get a really nice 2017 STI, bone stock.

I have a list of things I'm going to/want to do and on there is the turbo-back exhaust.
I'll start with the cat-back first to save me a tune for now, but I wanted to ask if anyone has the Q300 on an STI, and if it's more prominent than on the WRX. It seems just a little too quiet on the WRX, and I've heard that it sounds a bit better on the STI's.

I've been doing my research, and it seems like the R400 is golden, but can get a bit loud once you go the down-pipe as well.
If anyone has the Q300 or the R400 with the down-pipe, and can shed any light on the tone/volume (bonus points if you have it before the down-pipe and can share the noticeable difference) I would be most grateful.

I'll be getting a cold air, and the access-port too, and if I do get a valve it wont be a BOV.

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u/EVO-Atticus — 3 days ago
▲ 13 r/WRX_STI+1 crossposts

ATI Super Damper Removal/Install (2016 STI)

I’m trying to figure out what the procedure is to remove my ATI super crank damper. I have the company23 damper wrench for aftermarket dampers but it’s not exactly clear to me what the procedure is to get the wrench installed onto the damper.

Do I remove the 3 bolts that are not countersinked to the damper face to thread the company23 wrench onto the damper? See them circled in red on the image. If so, what type of socket and size do I need? Thanks.

u/Limp_Cryptographer40 — 4 days ago
▲ 149 r/WRX_STI+2 crossposts

Trade VB for a hyper blue STI?

I’m seriously considering trading in my stock 22 limited VB WRX (55k miles, paid off) for a 2016 limited edition hyperblue STI (32k miles). I’ve owned the VB since new. The hyperblue has had 2 previous owners and full maintenance history. Oil changed every 6 months or 3k whichever came first. It’s stock except for catback. I originally wanted an STI but just missed out on the opportunity. I do love the VB but if I keep it. I’m going to do a full paint match, wing, light performance mods, ohlins, catback, and probably UEL even though I know they are inefficient I don’t care. I’ll still hit my power goals and The rumble is one of the best things about a Subaru. So cost wise I’ll probably end up spending a bit more if I keep the WRX.

This is my daily. I have kids but they rarely ever ride in the car, though I’d like for that to change. I test drove the STI and did not think the ride was too harsh.

The interior on the VB is definitely nicer. I don’t mind the screen as much as most other people. The STI is not bad by any means and I can swap an aftermarket unit in for CarPlay.

Looks wise. I also personally think with a full paint match like pictured in the post the VB can look as good as a VA if not better in SOME aspects (blasphemy!), though the shape of the fenders (esp rear) looks a bit off still. I love the taillights.

I’ve always had fomo for not getting an STI and after test driving I really loved the car. I do think the VB could potentially get there if I did all the mods I want to it.

Reliability is definitely important. On one hand if the STI motor goes I can get an IAG block and have no worries (?) and on the VB it’s the trans swap. Not sure if either would necessarily happen but seems like it may be a wash?

If I buy it and realize it was a mistake I have up to 10 days to change my mind FWIW.

Has anyone gone from a VA STI to VB or vice versa that can help give me some opinions or insight i may not be considering?

Bonus points if anyone owned this car or knows the previous owner(s) car is in FL.

Disclaimer: the VB in the pics is NOT mine. Just an idea of what I mean by full paint match and other than being slammed, is what I have in mind for the VB if I keep it. Credit IG: mario64.lobo

u/ZombieWelder420 — 9 days ago
▲ 32 r/WRX_STI+1 crossposts

What goes here, if anything?

Bone stock 2021 WRX STI. For some reason I never noticed there are unused mounting locations on the intake manifold. Wonder what they’re for..

u/Advanced_innovation5 — 8 days ago

IAG Air Oil Separator on FMIC STi

My post got removed by the /wrxsti mods and someone told me to post here instead. Does anyone have the IAG Air oil separator on their STi with a frontmounted intercooler? I asked IAG and they said it was possible, I just wanted to know how feasible it was and if you need anything extra for the install.

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u/ShmeggieDiapee — 8 days ago
▲ 13 r/WRX_STI

05 sti Drivetrain issue

Can anybody give me an opinion on what this sound can be from. Sound only happens on decel and seems to happen during all gears but seems loudest in 2nd-4th. Got the drivetrain off a copart car and after installing and driving the car for the first time i noticed the transmission had issues. So sent it out locally to get repaired. Has all new synchros, rcm clutch packs, new drive gear bearing, new shift fork/sleeves, new clutch and flywheel. I’ve probably removed and installed the trans 4 times now and got the trans and diff inspected and all the clearances internally are within spec. Wishing I just bought a new trans to begin with after the first removal. But I’d appreciate any opinions or possible ideas on what the issue can be.

u/zja9225 — 11 days ago
▲ 10 r/WRX_STI

SUBURU WRX 2018

Can somebody please help me diagnose what is going on here? The clutch was repaired last February took it to the same mechanic that did the clutch and they do not have any idea what it is. Nobody seems to think it’s the knock AC compressor was suggested there are no indicator lights on on the dash and it’s not drivable and now having to get a tow truck to another mechanic that works on Subaru, but does anybody have any idea what this is please??

u/Madelinebeauty — 13 days ago

2017 WRX

What does everyone do with a 2017 WRX new clutch. Only 73miles on it lowered all black with stage 2 ROD KNOCK. what would all you guys do?? And owe 4,000$ remaining. Sucks almost paid off

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u/Madelinebeauty — 12 days ago