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Old 06-23-2015, 02:39 PM   #1
Fullfrontal
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Default Project #FA20 STI

Hello NASIOC, I have been a huge fan for a while but haven't really had a point in posting until recently, mostly because some of the local Subaru enthusiasts convinced me to.

Let me start with a little info about me.
I started out with 6th and 7th Gen celicas, moved into a cobalt SS (Turbo version), picked up a 97 legacy OB, 2013 FRS and now a 2015 WRX that I have been converting to an STI.

Most people know me from my widebody supercharged FRS. Link below to that build thread.

http://www.ft86club.com/forums/showthread.php?t=44226


After ordering a 2015 STI earlier this year, after being promised that it would arrive with a new (Not EJ) series engine and it showing up with an EJ engine, I decided I should just pay cash for the new WRX (The only one on the Lot), and put all the bells and whistles on it to make it the STI that Subaru didn't build with the remaining cash I had saved for the STI. The big motivator here was the FA20DIT. I had the NA version of the FA in my FRS and never once worried about an issue. People were pushing 600+ HP on stock bottom ends, so I assumed Subaru got it right for their "Rally Car".

In april 2015 I picked up a DGM 2015 WRX Base. Manufacture month was March. I opted for the Factory subwofer and fog lights.
This is it the day I purchased it;


and the day after having the windows tinted;


Prototype window vents I was working on;


The first parts I ordered were these AMBIT wheels. They weigh 19 lbs vs the stockers at 24lbs. These are temporary, but I wanted something cheap I could throw around for a while.



I then dropped it on EIBACH Pro lowering springs to stiffen it up a little.

I figured if I was going to do performance mods, I would need the ability to slow the car down quicker, therfore my first STI mod was the STI brembos.




I added braided brake lines and Motul brake fluid when I did the swap. I had to cut the lip off of the rear dust shields and of course purchase, the rotors, pads, hardware, calipers, lines... etc. Thankfully the wheels fit over the calipers in the front as the stockers wouldn't.

Next, I needed to up the power to a minimum of 270 WHP, I decided to go a step further and shoot for 310-320 whp until this next winter. In the long run, I think 410-450 would be plenty for me in this platform.

I started with the V3 Access Port. After dealing with issues straight out of the box, I overnight-ed it back to COBB and was informed they sent me one that had been programmed for a Porsche. Cobbs customer service was top notch through the whole process. My only complaints are; 1. The USB cable provided sucks and doesn't work, yet other cables I have work perfectly. and 2. I would really like flexfuel support.

Next I went with the ETS catted J pipe and ETS Cold Air Intake. I am a big fan of ETS as we run quite a few of their parts on our shop EVO and there is nothing like supporting an American company who doesn't outsource.




I managed to pick up some random parts from VA Parts house in chesapeak VA.


To include Hella Horns, Which I powdercoated INK Black at my shop and mounted on the Perrin Bracket for that Subtle look and to match the Black bit on the bumper:



I then Ordered and installed all of the STI badges on the Car and went on a trip to FL to visit Family.

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Last edited by Fullfrontal; 06-23-2015 at 02:59 PM.
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Old 06-23-2015, 02:40 PM   #2
Fullfrontal
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In Daytona Beach



Just before I left I baked and painted my headlights black



I Ordered the Nameless axleback muffler delete, installed it and then removed it after 20 miles. It was entirely too loud for my ears.



I was looking for something to remove the slop out of the transmission on hard shifts, So I managed to pick up the Perrin pitch stop mount. What an improvement!





Next I wanted to get a protune but I wanted to instal TGV deletes and a different chargepipe beforehand.

I ordered the tigerworks TGV deletes. I wanted the TIC ones, But they don't come in black.


For the chargepipe, I preordered the AEM, Only to receive it and find out that it isnt straight bolt on for recirculating the BOV.
SO after getting pissed off and cursing AEM for sending me a piece of junk, I Fabbed something up:

Stock vs AEM.




It looks like it wont clear the hood but it does, Barely. I will never buy from AEM again.

I did all of the normal lighting upgrades such has LEDS, 5000k Headlights.... Etc

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Old 06-23-2015, 02:40 PM   #3
Fullfrontal
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Next was the STI wing and mirrors:

I went OEM with the wing and picked it up for 450.00, plus 150 for paint.
I predrilled;


removed my tape, sealed the edges of the holes;



Then I installed the wing.



My STI mirrors are on back order, and I have some interior pieces on the way.
The goal is to have the interior finished before installing the STI 6 speed with adjustable diffs, Mostly because I need to mount the SI drive switch/knob.
I am also aware my gauge cluster needs changed out, It is just difficult to get parts for these cars still.

update 24JULY15

After reading about the 2.0 engines getting thrown in the race spec STIs, I have gained some more enthusiasm for this build.

I managed to pick up a set of STI base wheels and wrapped them in a set of 255 40 18 NITO INVOS.





Then I picked up the entire center console assembly and shifter bezzel plus shift knob.
waiting on the SI drive switch setup to install my transmission, the steeering wheel bezzel and I am researching which wiring harnesses I need to connect a couple of bells and whistles.

after tuning I am sitting at 330whp, 360wtq on 93.



The car as it sits now;




Last edited by Fullfrontal; 07-24-2015 at 09:35 PM.
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Old 06-23-2015, 02:41 PM   #4
Fullfrontal
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Old 06-23-2015, 02:41 PM   #5
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Old 06-23-2015, 02:42 PM   #6
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Old 06-23-2015, 02:42 PM   #7
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Old 06-23-2015, 02:43 PM   #8
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Old 06-23-2015, 02:51 PM   #9
dandingus
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Looking good so far. Curious to see where you end up with this!

Also that FRS is nuts!
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Old 06-23-2015, 03:10 PM   #10
sc00ter
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You'll likely get a lot of gripe from people about trying to "convert" your WRX into an STI since, no matter what you do to the WRX, it won't ever actually be an "STI". Especially while you have the FA20 in it. Because of this, the badges are a bit rice-y since they are definitely a misrepresentation of what the car is.

With that said, The work you are doing is excellent. You really are making progress to create what the 2015 STI truly should have been, if you ask me. But, I'd still lose the badges.
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Old 06-23-2015, 03:14 PM   #11
Shortpersonbk
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Cool theory but that fa20 as of right now/last i kept in the loop will not make as much power as a equally built ej257. The thing that made the brz and frs make so much power easily is not on the new wrx which is the heads. Also there are stock turbo wrxs blowing rods.....So subaru messed it all up...trash wrx motor....same old always not going to be perfect ej257 in the sti. If we are lucky maybe in a couple years we will get a sti with a FA that doesnt suck.
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Old 06-23-2015, 03:17 PM   #12
Fullfrontal
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Quote:
Originally Posted by sc00ter View Post
You'll likely get A LOT of gripe from people about trying to turn your WRX into an STI since, no matter what you do to the WRX, it won't ever actually be an "STI", thus making the badges a bit rice-y.

With that said, The work you are doing is excellent. You really are making progress to create what the 2015 STI truly should have been, if you ask me.

Again, I'd lose the STI badges, simply for the fact that it is a misrepresentation of what the car is. But aside from that, I'm loving it.
EHH, I like the red accent to the exterior of the car, besides I am building what I believe the STI should have been. It' funny that you say I will probaly get a lot of gripe, but you are the first to bring it up. I could understand if I I just through the badges and wing on and was like hey look at my sweet car, but no, I am doing everything, from the mirrors to the transmission. Shoot, I recently realized the STI headlights are different than the WRX and am trying to source the parts to repin the harness. That's how far this build is going.

The original thought was to buy the STI and swap the fa20 into it, but from a cost perspective it didn't make any sense.
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Old 06-23-2015, 03:22 PM   #13
Fullfrontal
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Quote:
Originally Posted by Shortpersonbk View Post
Cool theory but that fa20 as of right now/last i kept in the loop will not make as much power as a equally built ej257. The thing that made the brz and frs make so much power easily is not on the new wrx which is the heads. Also there are stock turbo wrxs blowing rods.....So subaru messed it all up...trash wrx motor....same old always not going to be perfect ej257 in the sti. If we are lucky maybe in a couple years we will get a sti with a FA that doesnt suck.
If i remember right the EJ starts having issues at 380whp with the stock internals, I mean I know a 2015 owner who blew his STI up at 8k miles and hes an old guy.

The FA is limited by the rods, yes but the ej is limited by the pistons. Ive seen fa20s with conservative tunes in the 400-430 whp range obviously without the stock turbo and that is on pump gas! If it comes down to it, Ill build the engine but I am trying to avoid breaking the case open anytime soon.
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Old 06-23-2015, 03:37 PM   #14
Shortpersonbk
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Default Project #FA20 STI

Quote:
Originally Posted by Fullfrontal View Post
If i remember right the EJ starts having issues at 380whp with the stock internals, I mean I know a 2015 owner who blew his STI up at 8k miles and hes an old guy.



The FA is limited by the rods, yes but the ej is limited by the pistons. Ive seen fa20s with conservative tunes in the 400-430 whp range obviously without the stock turbo and that is on pump gas! If it comes down to it, Ill build the engine but I am trying to avoid breaking the case open anytime soon.

The issue is even if you build the engine it won't make power, last I looked no one could make over xxx whp because of how horrible the heads are. One shop that was going for bigger power/r and d said they were going to try switching to heads from the brz, another said if their ported head didn't work out he was going to also try to make the switch. I haven't seen updates on either in a while though so idk if the cars are even running anymore or just on the back burner while they figure it out.


Like I said the fa would be 10x better if Subaru would give us the same heads that the brz/frs gets that also has another benefit besides flow which is having both port and direct injection, vs direct only in the wrx.

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Old 06-23-2015, 03:44 PM   #15
thill
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I personally think you will spend a lot of money trying to make an STI vs just buying one. I just don't see the point. At any rate the biggest reason to buy an STI for me is not the engine it is the differentials, brakes, and Asin 6mt. You simply are not going to be able to do those things very easily or cheaply. I mean someone just recently added an LSD to their 15 WRX for a relatively cheap price, so that may be the best you can do.
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Old 06-23-2015, 05:32 PM   #16
Fullfrontal
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I already have the brakes and I already have a sourced transmission. Why would I buy the lsd? The point is to have all of the benefits of an Sti without the ej.

As for the head and flow issues, I've heard of them but keep in mind the market will catch up on top of the fact that the heads won't be an issue with my stated horsepower goals.
I'm not trying to make 700whp.
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Old 06-23-2015, 06:00 PM   #17
thill
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Quote:
Originally Posted by Fullfrontal View Post
I already have the brakes and I already have a sourced transmission. Why would I buy the lsd? The point is to have all of the benefits of an Sti without the ej.

As for the head and flow issues, I've heard of them but keep in mind the market will catch up on top of the fact that the heads won't be an issue with my stated horsepower goals.
I'm not trying to make 700whp.
Because the biggest benefit of the STI vs the WRX is the differentials. It always really has been. That's fine if you skip that, but saying you turned your WRX into an STI w/an FA20 is just kinda silly if you have open diffs. I mean the STI also has a sharper steering rack too are you going to replace the WRX steering rack with a 2015 STI?
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Old 06-23-2015, 06:24 PM   #18
klapasch
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Like the idea of heavily modding a WRX. Suscribed and hope to see yours futher upgrades in suspension (you're still only a WRX there) and engine.

The only remark I have is the badges, I would have put the wing as you did, but not the STI badges, as is your proyect and not a real STI.

Do you have a video of the exhaust without the mufflers?
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Old 06-23-2015, 06:31 PM   #19
Scoob1318
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You bought your wrx in April of 2015...how did you think that the 2015 sti came with an FA motor when the car was out for 10+ months. Also any due diligence would have let you know subaru was sticking with the EJ on the 2015 sti.
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Old 06-23-2015, 06:39 PM   #20
machineica
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Why cant he have his st-lie? Its his car let him spend his money. Seriously though get the diffs. Sweet ride man add all the stuff you want. People like me wont complain when buying pull off parts from a fresh car.
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Old 06-23-2015, 07:06 PM   #21
sc00ter
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Quote:
Originally Posted by Fullfrontal View Post
... It' funny that you say I will probaly get a lot of gripe, but you are the first to bring it up. ...

The original thought was to buy the STI and swap the fa20 into it, but from a cost perspective it didn't make any sense.
But throwing a bunch of STI parts on your WRX, in an effort to call it an "STI, does make sense from a cost perspective?

And putting STI stickers/badges on your car is really no different than me throwing Nssan GTR badges on mine. It's a misrepresentation of the actual car you are driving, simple as that.

It's your car man. Do what you want. I disagree with the badges. However, like I said, the actual work you are doing is intriguing and I like it. Keep it up!

Quote:
Originally Posted by Shortpersonbk View Post
Cool theory but that fa20 as of right now/last i kept in the loop will not make as much power as a equally built ej257. The thing that made the brz and frs make so much power easily is not on the new wrx which is the heads. Also there are stock turbo wrxs blowing rods.....So subaru messed it all up...trash wrx motor....same old always not going to be perfect ej257 in the sti. If we are lucky maybe in a couple years we will get a sti with a FA that doesnt suck.
Oh give it a rest. The FA20 in the WRX is far from a "trash" motor. It's handling reasonable HP numbers (sub 400whp) as good or better than the EJ did. Especially when e85 is used. Asking a Subaru motor to handle 450+whp in stock form has never been reasonable, even in your beloved EJ motors.
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Old 06-23-2015, 07:13 PM   #22
Shortpersonbk
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Quote:
Originally Posted by sc00ter View Post
But throwing a bunch of STI parts on your WRX, in an effort to call it an "STI, does make sense from a cost perspective?

And putting STI stickers/badges on your car is really no different than me throwing Nssan GTR badges on mine. It's a misrepresentation of the actual car you are driving, simple as that.

It's your car man. Do what you want. I disagree with the badges. However, like I said, the actual work you are doing is intriguing and I like it. Keep it up!



Oh give it a rest. The FA20 in the WRX is far from a "trash" motor. It's handling reasonable HP numbers (sub 400whp) as good or better than the EJ did. Especially when e85 is used. Asking a Subaru motor to handle 450+whp in stock form has never been reasonable, even in your beloved EJ motors.

Your right... the fact that people cant even make 400whp makes it a great motor . Or better yet have you seen what a new wrx graph looks like on the dyno even after a tune its a wavey mess. Like i said id LOVE to see a wrx or sti with a FA and GOOD HEADS like the brz/frs got im not even really complaining about the rods that like to return to the wild thru the side of the block because thats easy to fix. The head portion requires some form of standalone and a way to add injectors.

I just like to note that for people who complain and say that the new wrx has the "better" motor and theres no point of the sti..blah blah blah.
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Old 06-23-2015, 07:33 PM   #23
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I have a few photos of your FR-S from winterfest on my laptop unedited still haha. Nice cars!
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Old 06-23-2015, 07:33 PM   #24
sc00ter
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Quote:
Originally Posted by Shortpersonbk View Post
Your right... the fact that people cant even make 400whp makes it a great motor . Or better yet have you seen what a new wrx graph looks like on the dyno even after a tune its a wavey mess. Like i said id LOVE to see a wrx or sti with a FA and GOOD HEADS like the brz/frs got im not even really complaining about the rods that like to return to the wild thru the side of the block because thats easy to fix. The head portion requires some form of standalone and a way to add injectors.

I just like to note that for people who complain and say that the new wrx has the "better" motor and theres no point of the sti..blah blah blah.
Just because it can't make 450whp+ reliably in stock form, doesn't make it a bad motor. In this regard, it's really no worse than than the EJ was. As it always has been with Subaru, if you are paying $25k - $35k car and expecting it to easily handle 450whp+ with stock internals, your expectations are simply too high. And that point can be stretched to just about any other brand with "performance" cars in the $25k - $35k price range, as well. It's not strictly with Subaru.

Both the WRX and the STI have their place and their own benefits. But I will say that I came from a 2011 STI to the 2015 WRX and there is not a single thing I miss about the STI, that the WRX doesn't provide for me. And I haven't even started modding it yet...
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Old 06-23-2015, 07:41 PM   #25
Shortpersonbk
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No I ment like they can't physically make over around 400whp without figuring something out with the fueling/head issues lol. You can build the block all day but your not making more power.

Having both a 12 and 15 Sti in the driveway. There are times where I find each as being "better". Like I said I am less bashing the 15 wrx for the short block and more for the head/trans. If we are lucky Subaru will come out with a fa for the Sti that fixes both of those things that IMO puts the wrx very far away of being "better" from a point of view of I'm buying this car to modify.





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