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Old 06-07-2009, 08:40 PM   #1
nikiter
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Default STi Intercooler for '06 WRX

How are STi intercoolers better than WRX's? Simply by size I assume?
If i do get one. Do i need different Y pipes and such? Does my car needs to be retuned?

Please tell me more about this mod for a Stage 1(for now) wrx.

Just more info.

Thank you
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Old 06-07-2009, 08:58 PM   #2
gte123v
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larger volume and larger surface area. You'll need a new y pipe and mounting brackets. You shouldn't need a new tune, but you'll notice a slight lag b/c of the larger volume. To take the full advantage you should also get the sti splitter that's part of the hood scoop.
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Old 06-07-2009, 09:07 PM   #3
nikiter
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Quote:
Originally Posted by gte123v View Post
larger volume and larger surface area. You'll need a new y pipe and mounting brackets. You shouldn't need a new tune, but you'll notice a slight lag b/c of the larger volume. To take the full advantage you should also get the sti splitter that's part of the hood scoop.

Hmm lag is no good.
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Old 06-07-2009, 09:13 PM   #4
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Quote:
Originally Posted by nikiter View Post
How are STi intercoolers better than WRX's? Simply by size I assume?
If i do get one. Do i need different Y pipes and such? Does my car needs to be retuned?

Please tell me more about this mod for a Stage 1(for now) wrx.

Just more info.

Thank you
Yes, simply by size and also the design sometime. I've seen an ebay tmic that are bigger but doesnt cool as well.
If you're going to use the sti tmic on wrx with the td04 turbo, I think the y-pipe is going to be a bit short. Get a 90 degree silicone tube thats alittle longer, and you'll be good.

Yeah, you'll probably need a retune to see a gain. Adding a bigger tmic will probably drop your psi. Just get a vf39 along with it, and you'll be good.

goodluck
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Old 06-07-2009, 09:15 PM   #5
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Quote:
Originally Posted by gte123v View Post
larger volume and larger surface area. You'll need a new y pipe and mounting brackets. You shouldn't need a new tune, but you'll notice a slight lag b/c of the larger volume. To take the full advantage you should also get the sti splitter that's part of the hood scoop.
Plus the bellows:gasket...
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Old 06-07-2009, 09:16 PM   #6
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so basicly i need sti turbo or bigger
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Old 06-07-2009, 09:21 PM   #7
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^ no you don't.

I have a JDM STi IC with a stock tdo4. No need for bigger turbo unless you want more power. USDM sti IC should be plug&play for you since you have an 06 with DBW.
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Old 06-07-2009, 09:27 PM   #8
nikiter
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^ no you don't.

I have a JDM STi IC with a stock tdo4. No need for bigger turbo unless you want more power. USDM sti IC should be plug&play for you since you have an 06 with DBW.

so are you getting more lag?

like what is the purpose of this I/C on wrx?
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Old 06-07-2009, 09:33 PM   #9
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Originally Posted by rexman2002 View Post
^ no you don't.

I have a JDM STi IC with a stock tdo4. No need for bigger turbo unless you want more power. USDM sti IC should be plug&play for you since you have an 06 with DBW.
what does getting a larger IC have anything to do with the DBW? I don't think the 06 wrx had DBW, only the STIs had it.
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Old 06-07-2009, 09:40 PM   #10
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Originally Posted by nikiter View Post
so are you getting more lag?
no....
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Old 06-07-2009, 09:56 PM   #11
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Everything 05+ I believe has DBW. My 06 does.

You don't need to retune.

The purpose of a larger intercooler is to reduce the temperature of the compressed air entering your engine. The lower the temp, the more dense the air, and thus more power.

You will see a bigger gain from this with a larger turbo, but it still is an improvement with the td04.

You will not see a noticeable increase in lag.



I believe you will need some sort of silicon elbow to make this work with the wrx turbo, someone more knowledgeable can chime in here on fitment. Or use the search button, it's there for a reason.
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Old 06-07-2009, 09:59 PM   #12
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Have a 07 TMIC on my 06 no brackets or hardware needed just about 20 min to put it all together and enjoy! lag.... its a td04 lag??? hahhahahaha

VF43 June 12th FTW!
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Old 09-10-2009, 08:45 AM   #13
nikiter
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Is this true that I need a different elbow to make it work with td04? OR whatever comes with STi top mount will directly bolt on?
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Old 09-10-2009, 08:57 AM   #14
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Quote:
Originally Posted by gte123v View Post
larger volume and larger surface area. You'll need a new y pipe and mounting brackets. You shouldn't need a new tune, but you'll notice a slight lag b/c of the larger volume. To take the full advantage you should also get the sti splitter that's part of the hood scoop.
You don't need new mounting brackets.

Just make sure you get one that includes the y pipe and you should be set.
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Old 09-10-2009, 06:14 PM   #15
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You'll just need a longer 90 degree elbow (2" ID). You will need to trim maybe 1/8th of an inch off each end to get it to fit properly.

Use this for reference: http://stylinmotors.com/images/usdmsticopy.JPG

I would recommend getting it from http://siliconeintakes.com/. They also have t-bolt clamps if you need better clamps as well.

You will also need a new splitter and bellows to take full advantage of the bigger intercooler.
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Old 09-10-2009, 06:18 PM   #16
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wrong thread sorry
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Old 09-10-2009, 06:18 PM   #17
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If you are not going to tune for it, I'd say it's a useless upgrade. And by tuning, I do not mean an off-the-shelf Stage 1 map that wasn't designed for an upgraded TMIC.

Honestly, there are better things to spend your money on right now than a TMIC, like a downpipe and then flash to Stage2. The difference will be far more dramatic.
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Old 09-12-2009, 01:15 AM   #18
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Quote:
Originally Posted by Audiosavvy View Post
If you are not going to tune for it, I'd say it's a useless upgrade. And by tuning, I do not mean an off-the-shelf Stage 1 map that wasn't designed for an upgraded TMIC.

Honestly, there are better things to spend your money on right now than a TMIC, like a downpipe and then flash to Stage2. The difference will be far more dramatic.
Unless you're already Stage 2+ like me

I got a super deal on a local STi TMIC so I went with it. I was hesitant because I kept on hearing the STi TMIC has like a 3psi pressure drop. But it'll probably be fine for my TD04 and soon VF43. Now, if I could just get a longer TB/IC coupler I would be in business.

My Y-Pipe looks like this though:



With the red part in stock silver of course. Weird.... I keep seeing all these hack Y pipe setups.... I'm thinking that setup with work just fine with my WRX minus the coupler I need.
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Old 09-14-2009, 09:54 AM   #19
nikiter
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Quote:
Originally Posted by Audiosavvy View Post
If you are not going to tune for it, I'd say it's a useless upgrade. And by tuning, I do not mean an off-the-shelf Stage 1 map that wasn't designed for an upgraded TMIC.

Honestly, there are better things to spend your money on right now than a TMIC, like a downpipe and then flash to Stage2. The difference will be far more dramatic.
already stage 2 tuned.....as soon as i put the top mount i will be going back for a road tune
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Old 09-14-2009, 10:01 AM   #20
nikiter
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Quote:
Originally Posted by sd_wagon_07 View Post
You'll just need a longer 90 degree elbow (2" ID). You will need to trim maybe 1/8th of an inch off each end to get it to fit properly.

Use this for reference: http://stylinmotors.com/images/usdmsticopy.JPG

I would recommend getting it from http://siliconeintakes.com/. They also have t-bolt clamps if you need better clamps as well.

You will also need a new splitter and bellows to take full advantage of the bigger intercooler.
thanks for the link....very nice

is this the elbow that I need?
http://www.siliconeintakes.com/produ...ebc4d1b2d501f1
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Old 09-14-2009, 04:59 PM   #21
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The STi TMIC will not be sufficient when you start getting upwards of 280whp/300wtq. It's just too small and gets too hot on a day that is 70 degrees+. If you don't plan on making more power than that, I say go for it. If you do plan on more power... just get a bigger TMIC from day one and save yourself some $$.

And yes, the above link is the elbow you need. I used scissors to cut it to the necessary size. Easy install/fix.
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Old 09-14-2009, 05:01 PM   #22
nikiter
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Thanks....The number you mentioned is where i wanna be maybe even a bit less.....gotta save the tranny lol
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Old 09-15-2009, 08:24 AM   #23
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So i ordered that 2"- 90 degree angle and some clamps from them.
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Old 09-15-2009, 10:39 AM   #24
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Do I need the elbow on a 05 Wrx if I'm attaching it to a EVO III 16G or will the STI elbow fit? I would just need the bigger intercooler to manifold pipe right? Not the elbow though?
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Old 09-15-2009, 11:30 AM   #25
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I added an STI I/C to my previous 06 WRX. I didn't notice any more or less lag.

You WILL need a new 90 degree elbow thing. The OEM STI one doesn't reach far enough. I forgot where I picked up a new one but it was through some digging on the forum and I found it.

Good luck!
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