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Smitty's 2011 DGM STI Sedan - The Perpetual Build

322563 Views 1817 Replies 122 Participants Last post by  Scargo
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Smitty's 2011 STI






History:

The car was purchased on Dec. 31st 2011. I traded in my 2010 Mazdaspeed 3 for it after wanting an STI since test driving a 2010 a year before. When the sedan came out I had to have it and jumped on a great deal.

The plan was to keep the power modest and go all out on suspension ... the plan has since changed as you will see.


Goal:

The current goal with the car is to build the ultimate street legal race car. As the car develops it will be transitioned to full time NASA TT competition and will be retired from street use (once I can bring myself to not wanting to drive it once in a while). The current build goal is to hit 550+ WHP.

The theme behind it is that of the logo above ... hellafunctional. You wont see any herra frush bull**** here. No stretched tires or unreasonable ride height. If it doesn't make the car go faster around a track or hinders performance at all it doesn't go on the car.

Unlike some cars around, this isn't a garage queen, it isn't 100% mint and it gets driven and beat to ****. I dont care about over priced "JDM" parts ... This car is built with function in mind with the components that are best for the job .. not the component with the biggest name and highest price tag because of that name.

I plan to push the level of performance of this platform as far as I can make it go. I will be trying some new things that aren't seen much on a Subaru. Some will work, some may not but I am not willing to settle for average or normal.

All that said ... feel free to read on, ask intelligent questions and make intelligent suggestions. Hopefully the journal is helpful and entertaining for everyone. Obviously I will be keeping it up to date as regularly as possible.


Contents:

Follow these links if you need to catch up. All major updates are here so you dont have to sift through all the random conversation.

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Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

You can get a body in white from Subaru of Japan and I know some rally teams are able to get their hands on them.
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Wouldnt it be nice if we could buy an STI shell and Drivetrain and thats it none of the useless bullshit. Or at least something more like the 04 was. Ford does that with the Mustang.
Then buy an 04 silly! :p

If you've got the cash, call up Vermont Sports Car. They can help! :lol:
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Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

06/14/12 - Build 2 Day 35

Sorry in advance for the wall of text but there is a lot going on in the grand scheme of things and I wanted to update those following with what is going on. As for tonight's update, I didn't get too much done I didn't have much time today to work on anything but I did get a little done.

For starters I got the radiator and the breaker for the battery wiring in today. The radiator packaging was great and it arrived undamaged. The welds look great, just as good as the Koyo that everyone seems to love. The Mishimoto X-Line is over a half inch thicker than the Koyo as well which is very nice. Thanks to Greg at TiC for the great pricing on this as usual.







The fuel lines are complete, the first step was to get the in tank pump in the car:







Once the pump was in I could make the lines that run to the surge tank. These are -6 lines and obviously feed the surge tank and return overflow from the surge tank to the main tank. The lines follow the routing where the stock lines used to be then go up into the trunk to the surge tank. So far the Fragola lines and fittings have been great, they are very easy to assemble.











Next up were the feed and return lines to the firewall, these are -8 and -6 respectively. I will need to get pictures in the daylight of the line routing since the pictures are too dark to see. Basically they run up the frame rail through where the bulkhead will be, then across the front of the rear seat area and then up the tunnel to the bulkhead fittings that I posted last time at the firewall.



That's it for the work I did tonight, tomorrow I will work on the fuel pump wiring and battery wiring once the wiring is done the interior or what is left of it can start to go back in.

In other news, If anyone wants a VERY lightly used AP I will have one for sale sometime in the next few weeks. Unfortunately I did not um-marry it before taking everything apart and it is not possible to do so with the entire wiring harness unplugged so I will need to wait to do that otherwise it would be for sale right now. IF you want it PM me for details.

On the same note, I will be using an AEM V2 EMS this time around. This will provide me with a lot of tuning flexibility and it pretty much solved the problem I was having with trying to find gauges that meet all my requirements. It was previously mentioned that one of my sponsors would be providing tuning services using ATR, however, due the the epically poor customer service that resulted in an 8 week wait for my turbo and a general lack of communication despite repeated attempts on my part I have dropped them from my list of sponsors. The car will now be tuned locally by someone that is very experienced with cars like mine. I am extremely excited to be working with him as well as the other company that is providing the AEM EMS. More details to come later on that.

Everything is here for the engine and it is ready to go together. As soon as I get the go ahead from Tony @ TiC we can start getting it together. I hope maybe this week or next so that I can get the engine on the stand and be able to finish up things like the Intake manifold and fueling component mounting.

I am told that Nameless is working on the parts for my car. They are starting mock up on the test stand engine and should have the test car in next week I think to do final fitment on the components. As soon as I get more information or if I can get any production pictures from them I will be sure to post what I am allowed to. Also keep an eye on their Facebook page since they like to post pictures there as well.

As far as what I am waiting on still, I am being pretty indecisive on seats. I have it narrowed down I just need to pull the trigger on one of them. I am still waiting on my clutch that has been back ordered for quite some time. I am hoping that it will be here when I am ready to drop the engine in since I obviously need it to be able to do that. The last things besides the seats that will need to be ordered are the oil cooler core and sandwich plate as well as some tires and some other small components. In general I am pretty close to having everything with here or on order to finish up the build.

It seems like a lot of stuff but once it is all here and in my hands it will move very quickly. Until then, Ill continue to work on little things to prep the car for the parts that I dont yet have.

I also wanted to post a review of the the TiC/3MI Racing TGV deletes that was done by another reviewer who has had the time to beat the shit out of them already. The results look very promising and I am excited to get to run these. Check it out and grab yourself a set once they are released!

TIC's New TGV's. They Really Do Work. - NASIOC

That is it for tonight, more to come later.
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Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Where the heck did you get those sexy fittings for the hangar from? I want meow.

Don't forget to do either/both one of the following:
1. Get aftermarket fans, push or pull and mount a little further down than you would expect
2. Trim the shit out of both ends of your upper coolant hose

I've seen this trend in a few cars now. If you don't trim the upper radiator hose, the stock fan assembly will cut open that hose. Not fun stuff. It takes about 3/4-1" off of both ends to get it to make the across pass horizontal with the front frame rail. This keeps it from hitting both the fans and the power steering pump if done correctly. Better to do it when you're putting it all together and before you burp the coolant system than have to pull it back off with everything hot. It's not fun getting hot coolant all over yourself...

Interested to see how the AEM V2 works out for you. My buddy George (Holycrapitsfast) is familiar with tuning the AEM V2, and he says the stock ECU (especially with some of the newer SD stuff) is a better tool in his opinion. There are some parts of the AEM like 4D tables that I do like very much, especially for fueling and timing which will be essential to a time attack car.
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Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Ill keep an eye on the hose, I imagine it will require a good amount of trimming base on the additional thickness.

Ducting will be key for both the heat exchanger and radiator as well as a good seal to make sure that air has to go through them both.

The fun part about the AEM is it is not a Subaru model at all, most people would be surprised to hear what it was originally intended for lol. Both companies working on it are pretty excited it seems since everyone except Cosworth has dropped the ball here so far. Actually Cosworth did too when whoever sets pricing there started smoking the best week in the world.

The price on this AEM unit is unbelievable I almost instantly sent the payment today when I saw it, it has been used by a couple other teams with real good success. The tuner's resume is impressive as is the owner's of the company that provides the ECM and harness. I am very excited about it. If it works well as it should I hope to spread the word because it seems like it has been used by a few race teams that it has been kept in that small community. The public need it until someone has a real standalone that they dont have to sell body parts for comes out.

The decision is based on several things including ease of tuning both geographically and financially. The availability of the select few who I trust. The desire to do something that people aren't doing. Most importantly, future growth that the stock ECU doesn't allow for.
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Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Oh, fittings are Earls or Russel EFI quick connects I cant remember at the moment, I may have taken pics a few updates ago.
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Perhaps the most useful mod I have on my two big Spal fans is a manual switch. The auto on still functions and comes on at 194 degrees, but often it's nice to forestall hotter temps with a quick flip of the switch. I think it was somewhat of a complicated wiring job into the fan relays, but with your skills, probably not...

Did you use an fittings internally in the fuel tank to your pump or is this just stock lines?
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Perhaps the most useful mod I have on my two big Spal fans is a manual switch. The auto on still functions and comes on at 194 degrees, but often it's nice to forestall hotter temps with a quick flip of the switch. I think it was somewhat of a complicated wiring job into the fan relays, but with your skills, probably not...

Did you use an fittings internally in the fuel tank to your pump or is this just stock lines?
Interesting idea, I have a 4 switch panel that I am only using 2 switches on right now. I had considered just making them manual all the time but was worried about the one time I forget them. Having them be both switchable manually and via temp is a great idea. I am going to look into that.

For the fittings do you mean inside the white pump housing? If so the inside is all stock other than the actual pump.
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Interesting idea, I have a 4 switch panel that I am only using 2 switches on right now. I had considered just making them manual all the time but was worried about the one time I forget them. Having them be both switchable manually and via temp is a great idea. I am going to look into that.

For the fittings do you mean inside the white pump housing? If so the inside is all stock other than the actual pump.
Yes, I would keep the auto on, just add the manual option. It may be a bit of a crutch, but after cooking two engines, I need all the crutches I can get...

My Spals are 1600 cfs and 1300 cfs - biggest we could fit with the thick radiator and oil cooler lines. They sound like jet engines when they come on. Scares people. What are you able to fit in there?

Thanks for info on in tank fittings. Wish there was a solid in tank an setup for big pumps like my 460...
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Yes, I would keep the auto on, just add the manual option. It may be a bit of a crutch, but after cooking two engines, I need all the crutches I can get...

My Spals are 1600 cfs and 1300 cfs - biggest we could fit with the thick radiator and oil cooler lines. They sound like jet engines when they come on. Scares people. What are you able to fit in there?

Thanks for info on in tank fittings. Wish there was a solid in tank an setup for big pumps like my 460...
I know one company that will have a solid in tank setup when they get around to finishing the design. It may be one big single like you have which I am a fan or, or possibly a double pump version and unlike the garbage Full Blown sells it will have some anti-surge features (for those of us that actually do something more than street pulls lol) and will not be over priced.

I am not sure yet on the fans, I havent ordered anyting because I have no idea what kind of room I will have until I drop the engine in but if your running a Koyo I will have about a half inch less room to work with I think.

Wiring them up cant hurt even if I never use it is is a nice safety feature. Maybe I can just have them turn on at a lower temp as well.
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

I know one company that will have a solid in tank setup when they get around to finishing the design. It may be one big single like you have which I am a fan or, or possibly a double pump version and unlike the garbage Full Blown sells it will have some anti-surge features (for those of us that actually do something more than street pulls lol) and will not be over priced.

I am not sure yet on the fans, I havent ordered anyting because I have no idea what kind of room I will have until I drop the engine in but if your running a Koyo I will have about a half inch less room to work with I think.

Wiring them up cant hurt even if I never use it is is a nice safety feature. Maybe I can just have them turn on at a lower temp as well.
Yes I have a koyo. If your Mishi is even thicker you will run out of room quickly if you also route oil cooler lines through that space.

Im not sure if the auto on point of 194 is OEM - think so. I do sort of wish they auto came on lower, but thats just a flick of the switch away, I guess. I do have a (controversial) low temp thermostat, which does seem to do some good, but Im not sure how this interacts with the on point of the fans.

If you know details on the internal pump setup but cant post publically, could you PM me please? My current solution is still working but it makes me nervous.
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Based on the Koyo site and the Mishimoto site, the Koyo is a little under 1.5" thick at the core and the Mishimoto is 2" so I will have a little less room I guess.

I am thinking maybe a temp switch that is set to come on lower than what the stock one does wired to a relay, I could just mount it near where the stock one is. Or maybe I can just adjust the point it comes on using the AEM, the only question is what temp and then no aditional wiring is needed. I will need to look into this i dont know if it has that capability.
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Based on the Koyo site and the Mishimoto site, the Koyo is a little under 1.5" thick at the core and the Mishimoto is 2" so I will have a little less room I guess.

I am thinking maybe a temp switch that is set to come on lower than what the stock one does wired to a relay, I could just mount it near where the stock one is. Or maybe I can just adjust the point it comes on using the AEM, the only question is what temp and then no aditional wiring is needed. I will need to look into this i dont know if it has that capability.
is that model of Mishimoto having the same issues as their other radiators where the end tanks leak?
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

No idea but that’s why it has a lifetime warranty. I would assume a company that warranties their products against the stupidity of the end user, in this case warrantying the rad even in the case of the user rear ending someone that it would cover leaks from the factory.

I haven’t seen anyone complain of this in a while and definitely not one instance on the x-line.
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

I would assume a company that warranties their products against the stupidity of the end user, in this case warrantying the rad even in the case of the user rear ending someone that it would cover leaks from the factory.
That also says they have a HUGE margin built into them.

I hope they fixed the issues they had in the past, but having a spare radiator just in case at a big time trial event isn't un heard of. :)
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

That also says they have a HUGE margin built into them.

I hope they fixed the issues they had in the past, but having a spare radiator just in case at a big time trial event isn't un heard of. :)
I thought thats was what Duct tape was for?
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

That also says they have a HUGE margin built into them.
:lol: HUGE. :D
Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

Gee ... I would love for advertisements to stop being embedded in my posts since I paid for an advertisement free membership and asked in the support thread for it to be taken care of and I use this thread for my sponsors advertisement not for fucking wood working books. I guess were now on NASIOC level for advertising ... anyway working on a small update now.
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Re: Smitty's 2011 DGM STI Sedan - Track Build Underway

06/19/12 - Build 2 Day 36

Just a quickie today. I spent a little time working tonight and got the heat reflective film on the firewall. I do not think that Subaru could have tried harder to make the firewall less flat for seemingly no reason at all. As a result this shit was a pain in the ass to do. I didn't expect it to be perfect and it isn't. That said it came out much better than I have seen before and most of this wont be visible anyway.

You can see the block off plates for the AC and heater and where the fuel lines come through the firewall.

Moved all the crap out of the way:



Picture of the AC block off plate, the Heater one was posted already:



Passenger side done:



Both sides done:



Fuel line bulkhead / old heater line entrance:



Here is a quick picture of the fuel lines again. I still need to grab some pics of the routing I will do that soon:



I did start the wiring but I wanted to make a couple changes so I stopped. I have a couple things I am waiting on ordered so If I get them tomorrow I will finish the wiring. Some of this may change but here are some pics for now.

Breaker for the positive battery cable:



Breaker mounted in the box:



Positive cable up to the breaker:



Breakers and relays for the fuel pumps:





That's it for tonight, I wanted to instal the MC brace but forgot it at my apartment so it will have to happen tomorrow and if I get lucky my parts will be here and I will get the wiring done.

In other news, check out post 3 in the link below for Ball Racing's final review of the TiC/3MI Racing Composite TGV deletes. These will be up for sale soon and I will be testing a set as well. I know what the price point on these will be and after this review and others that will follow, If you are looking for TGV deletes and go with a metal set then there is no helping you lol.

B.R.E.D: Review of TICs new TGV Deletes - NASIOC
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