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Old 01-06-2021, 01:08 PM   #226
Kostamojen
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The 1050x + AEM combo is your best, most reliable option.

Kind of surprised how far you are straying from OEM+ now though.
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Old 01-06-2021, 01:27 PM   #227
murrdogg24
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OEM+ can't stop the modding bug lol
Quote:
Originally Posted by Kostamojen View Post
The 1050x + AEM combo is your best, most reliable option.

Kind of surprised how far you are straying from OEM+ now though.
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Old 01-06-2021, 02:04 PM   #228
archer1.8
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Quote:
Originally Posted by Kostamojen View Post
The 1050x + AEM combo is your best, most reliable option.

Kind of surprised how far you are straying from OEM+ now though.
UGH! I know. Trust me, I do everything I can to stay as OEM as possible. But, sometimes it just doesn't make sense. When stock S209 owners are reporting 100% duty cycles it starts to make me think. Do I really want to lean out an engine because I wanted that OEM+ goodness?

I personally called 3 different companies who contributed to the Cosworth CS400 STi to find out if the downpipe would work on my car. I am dedicated as hell, but when it comes to sacrificing reliability I think twice.

In fairness, the S209 uses HKS components anyway. The HKS 650cc fueling kit is almost $800. 1050X injectors, pig tails, and fuel pump is $550. If the S209 injector was closer to an 800cc injector I would pull the trigger.

Don't worry. I got quite a few more JDM irons in the fire, and parts on their way. S206 Lower Front Arm Bar, JDM STi Performance Stainless Brake Lines, S209/STi Performance Brake Pads, and am looking into what I need to do to make the R205 rear 4 pot brakes fit the VA chassi as well as the Spec C 1 piece intake manifold.

Last edited by archer1.8; 01-06-2021 at 02:51 PM.
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Old 01-11-2021, 11:39 AM   #229
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Now that the Downpipe install is complete I have moved onto the Group N inlet install.

First off, I have installed turbo inlets on 2 other turbo Subarus before, and this was the most challenging. I had to cut off all the vacuum ports on the OEM inlet to get that thing out. Not to mention Subaru placed the damn BPV return hose clamp in a place you just cant get to! Anyway after an hour of pure will I removed it from the car.








Comparison of the Stock Inlet vs the Group N Inlet








The Group N inlet install literally took 1 minute. This was by far the easiest inlet I have ever installed. It fits dead nuts with nothing rubbing or interference. It slid perfectly onto the turbo with no hassle.

However, my BPV return hose is being pinched by the throttle body a bit more than I would like. My inlet didnt come with a fitting to connect the BPV hose, and the one I am using is a bit longer I think. I will work on making the line fit better tonight.







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Old 01-11-2021, 04:51 PM   #230
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looks good!
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Old 01-15-2021, 06:59 PM   #231
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I needed one final piece to my intake system before the car gets tuned next week. That was the JDM STi Reinforced Throttle Body Coupler.









There are 2 versions of this coupler. A GC8 version that measures 52m, and a GDB version that measures 46mm. From my research the 52mm is what you would need for an 08+ STi. I will confirm once I get everything back together.

The GDB version is a bit more common. The S202/3/4 and RA-R from my research came with the reinforced throttle bay coupler, but was part number ST2183066000. Its a 46mm in length. The GC8 part number is ST2183055000 and is 52mm. I was told by someone who used the GD version on an 08+ that it was a tad to short, and they recommended the GC* version.

Overall, I think it completes the entire OEM intake system nicely. My next round of power upgrades will be the v9 Spec C Long Runner Intake Manifold with the larger BRZ/GT86 throttle body, and a parallel fuel system.

But for now the car gets tuned next week. I have ID1050x, an AEM fuel pump, and the GD STi FPR to fix the stumble at 2700rpm. I am content with the fuel system being one of the only systems not OEM+
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Old 01-16-2021, 04:37 PM   #232
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The red oem STi coupler looks sweet but you do realize that will not make any power gains/difference right? Only reason Is you mentioned getting it prior to tune.
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Old 01-16-2021, 05:49 PM   #233
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Quote:
Originally Posted by 07imprezRS View Post
The red oem STi coupler looks sweet but you do realize that will not make any power gains/difference right? Only reason Is you mentioned getting it prior to tune.
HAHAHA, its got an STi logo its definitely worth +5hp on the Dyno lol


I just wanted the entire car back together with everything I am going to be doing to the intake system. They are doing a smoke test before tuning to make sure everything it tight with no boost/vacuum leaks. I would hate to have everything perfect, then post tune remove the intercooler to install something as small as this throttle body coupler and cause a vacuum leak or something. Once its tuned, I wana keep it together until I get my Spec C Intake Manifold
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Old 01-17-2021, 12:29 AM   #234
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Installed the STi Throttle Body Coupler, and the S209 intake tonight to make sure 100% everything fit up perfectly for the dyno day this week. Still waiting on my injectors to arrive via snail mail. Had to uninstall the S209 intake, because the car just wouldn't run without the MAF scaled properly to drive it to the tuner. So they can install it when they install the injectors.







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Old 01-17-2021, 09:37 AM   #235
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Looking good!

Quote:
Originally Posted by archer1.8 View Post
I wana keep it together until I get my Spec C Intake Manifold
Have you read MrSaturn's write-up on doing that manifold yet? Quite involved, especially on a DBW USDM 2.5. Even the one we installed on my son's ej20 was not without some interesting caveats. Might be easier just to go with the jdm tgv deletes if you want to keep in OEM.

Still, they really do have that oem JDM appeal for the oem+ guys.

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Old 01-17-2021, 03:09 PM   #236
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Quote:
Originally Posted by Shik View Post
Looking good!



Have you read MrSaturn's write-up on doing that manifold yet? Quite involved, especially on a DBW USDM 2.5. Even the one we installed on my son's ej20 was not without some interesting caveats. Might be easier just to go with the jdm tgv deletes if you want to keep in OEM.

Still, they really do have that oem JDM appeal for the oem+ guys.

I have seen his writeup, and I think its definitely doable. As I am ok with having a fully aftermarket fuel system I think it makes it alot easier of an install as the Spec C fuel lines can be tough to locate and adapt. Any info you habe would be great tho
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Old 01-17-2021, 09:32 PM   #237
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Looking good for sure, oem +
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Old 01-18-2021, 03:03 PM   #238
Shik
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Quote:
Originally Posted by archer1.8 View Post
I have seen his writeup, and I think its definitely doable. As I am ok with having a fully aftermarket fuel system I think it makes it alot easier of an install as the Spec C fuel lines can be tough to locate and adapt. Any info you habe would be great tho
Gotcha, I didn't realize you were fine with going to the aftermarket for the fuel system. That will alleviate most of the fitment issues.
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Old 01-18-2021, 06:48 PM   #239
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Quote:
Originally Posted by Shik View Post
Gotcha, I didn't realize you were fine with going to the aftermarket for the fuel system. That will alleviate most of the fitment issues.
As much as I would love to keep the fuel system OEM, to my knowledge, there just isn't any OEM options that will support 300whp+ with injector duty cycles not at 95%. The S209 HKS injectors are only 650cc, and down the road when I plan for a twin scroll setup I don't want injectors holding me back.

The Cosworth CS400 does use a HKS 800cc injector kit I believe. But I feel like I am spitting hairs. The ID1050x is a damn good injector, and I am content with an aftermarket fuel system that would make instaling a Spec C manifold easier. Its a fair trade off I think.
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Old 01-22-2021, 09:27 AM   #240
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I was always curious about the JDM STi R205 Lower Arm Support Bar. This piece preceded the front draw stiffners. All of the literature I have read said that both of these parts could not be used together, because of interference.

Well, after looking at a bunch of different installed pictures I was convinced it would fit, and took a chance. Early in November I found a guy parting out an R205 in Russia who had one for sale for stupid cheap.

As of late, I have been focusing on getting the car ready for the dyno with the new power mods I totally forgot I ordered it. It showed up in a sketchy box and was surprised when I opened it lol.








I installed the bar the way the R205 had it, STi emblem facing forward, and the brackets reversed. It installed perfectly fine. However, I found that it hung lower below the subframe than what the pictures of the R205 showed. So maybe the subframes are different?

So I reversed the mounting brackets side to side, and mounted the bar with the STi emblem facing rearwards. It tucks up absolutely perfectly between the draw stiffners, and the JDM STi Front Support Braces.





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Old 01-26-2021, 12:08 PM   #241
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This build would be one of my favorite Youtube channels, if it had a Youtube channel.
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Old 01-26-2021, 01:30 PM   #242
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Quote:
Originally Posted by Shik View Post
This build would be one of my favorite Youtube channels, if it had a Youtube channel.

My plan is to do a very similar OEM+ build and do a series on it. Just saving up the cash to order it all and do it all from start to finish. Hoping to be able to get all the parts when I am ready.


Been keeping in touch with archer on the FB group since he started his build.
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Old 01-26-2021, 08:49 PM   #243
archer1.8
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Quote:
Originally Posted by Shik View Post
This build would be one of my favorite Youtube channels, if it had a Youtube channel.
HAHAHA trust me. You don't want to see my ugly mugg on you tube lol. Smedia does a wonderful job that I could never replicate. I do think I should upgrade to a real camera at some point.

Since I bought my RA, the amount of people interested in going the OEM+ route has taken off it feels. I don't know if its because the older JDM/Group N/ Series stuff is from a bygone era in the Subaru community, and people want a piece? Or, we are like the old guys who love numbers matching Corvette Parts. I guess in the car community some things never change.

Personally, I love seeing people use OEM parts instead of aftermarket stuff. Yea its more expensive, but it always fits better.
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Old 01-26-2021, 08:55 PM   #244
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I think you would find most of us old school guys have been OEM+ for the duration, cheap and over done seem to be so much of the norm now.

Looking great! Keep it up.
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Old 01-26-2021, 08:59 PM   #245
archer1.8
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Drove down to Ralispec in south New Jersey yesterday. They had 1 more set of JDM Spec C Top Feed TGV Deletes still on the shelf. I told them to set them aside, and drove the 1.5 hours down to pick them up.








These Spec C TGV Deletes are taken off the assembly line before the machining takes place to install the butterfly valves and the drive motor. Yea, there are some sexy billet TGV deletes from some companies out there for sure. However, there is just something about how the OEM does things when they want to go racing. The parts are just cooler.











These are the last pieces I needed before the car goes to Prime Motoring for a tune next Friday.

Also....I decided on my turbo upgrade thanks to some wonderful people. Its still an IHI turbo and OEM+ as hell. Cant wait!
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Old 01-27-2021, 12:36 AM   #246
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Quote:
Originally Posted by archer1.8 View Post
Drove down to Ralispec in south New Jersey yesterday. They had 1 more set of JDM Spec C Top Feed TGV Deletes still on the shelf. I told them to set them aside, and drove the 1.5 hours down to pick them up.

















These Spec C TGV Deletes are taken off the assembly line before the machining takes place to install the butterfly valves and the drive motor. Yea, there are some sexy billet TGV deletes from some companies out there for sure. However, there is just something about how the OEM does things when they want to go racing. The parts are just cooler.























These are the last pieces I needed before the car goes to Prime Motoring for a tune next Friday.



Also....I decided on my turbo upgrade thanks to some wonderful people. Its still an IHI turbo and OEM+ as hell. Cant wait!

I am guessing a IHI VF48 high flow?

https://www.full-race.com/store/suba...10583496093750

Without my planned mods for one it is a 10% power increase over the regular oem model and has a slightly quicker spool. Doesn’t require a tune either unless of course the build consists of more than this turbo.

There are few better oem options without going with a twin scroll set up like a VF58 (holy grail oem turbo).

I plan to go with the high flow and swap the cartridge with a ball bearing unit. Maybe upgrade the compressor wheel even further than the one they used for it.
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Old 01-27-2021, 03:48 AM   #247
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Quote:
Originally Posted by Lrn2Corner View Post
I am guessing a IHI VF48 high flow?

https://www.full-race.com/store/suba...10583496093750

Without my planned mods for one it is a 10% power increase over the regular oem model and has a slightly quicker spool. Doesn’t require a tune either unless of course the build consists of more than this turbo.

There are few better oem options without going with a twin scroll set up like a VF58 (holy grail oem turbo).

I plan to go with the high flow and swap the cartridge with a ball bearing unit. Maybe upgrade the compressor wheel even further than the one they used for it.

I highly considered the Vf48 Hi Flow. I then talked to WRXnick16, who had his VF58 upgraded by Advanced Sports Engineering in Italy, and as their US ambassador told me about all of the options they offer. I almost pulled the trigger on a fully custom turbo using all OEM parts.

It would have been a VF48 machined to accept the ball bearing center section of a VF34 which was the last single scroll ball bearing IHI turbo. Then used a P20 exhaust housing from the larger VF22. All using a billet compressor wheel and upgraded turbine wheel of your choice. Giorgio from ASE told me that this combo would spool faster than a stock VF48 with the light weight internals and ball bearing by about 250rpm even with the larger P20 Housing.

The wealth of knowledge Nick, and Giorgio from ASE have about IHI turbos was incredible. I am getting a turbo from them, however its a lot more more special. I hope to have some more pictures and info in the coming weeks once it is officially mine.
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Old 01-27-2021, 08:23 AM   #248
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Quote:
Originally Posted by archer1.8 View Post
I highly considered the Vf48 Hi Flow. I then talked to WRXnick16, who had his VF58 upgraded by Advanced Sports Engineering in Italy, and as their US ambassador told me about all of the options they offer. I almost pulled the trigger on a fully custom turbo using all OEM parts.

It would have been a VF48 machined to accept the ball bearing center section of a VF34 which was the last single scroll ball bearing IHI turbo. Then used a P20 exhaust housing from the larger VF22. All using a billet compressor wheel and upgraded turbine wheel of your choice. Giorgio from ASE told me that this combo would spool faster than a stock VF48 with the light weight internals and ball bearing by about 250rpm even with the larger P20 Housing.

The wealth of knowledge Nick, and Giorgio from ASE have about IHI turbos was incredible. I am getting a turbo from them, however its a lot more more special. I hope to have some more pictures and info in the coming weeks once it is officially mine.
Trying to go all secretive on us huh. Cool!! Keep the suspense and teasing going man. So far so good. BTW, I got dibs on the car when you are ready to move on to bigger pastures.
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Old 01-27-2021, 08:35 AM   #249
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I'll have to give Giorgio a call today and tell him I want the same turbo you're getting...
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Old 01-27-2021, 12:08 PM   #250
archer1.8
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Quote:
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Trying to go all secretive on us huh. Cool!! Keep the suspense and teasing going man. So far so good. BTW, I got dibs on the car when you are ready to move on to bigger pastures.
Just don't want to be that guy who makes claims of things he has before they are in his hands haha. Rare OEM parts always find a way to slip through my fingers. But, ASE and Giorgio were able to make my OEM+ dream a reality lol.
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