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Old 02-07-2006, 04:30 PM   #1
mcu81
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Default Anyone running a stock evo twin scroll turbo on a wrx?

I am going to be fabbin up a complete turbo setup for my wrx and was wondering if anyone had this turbo on their car?

It looks as though the stock evo twin scrolls are good for 400whp, can be had cheap, and should spool pretty well as compared to other 400whp turbos.

-mikey
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Old 02-07-2006, 04:33 PM   #2
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i think it wouldnt be worth the effort to get the twin scroll turbo off the evo to work on the subaru.

I dont think its the turbo itself thats so special, its the exhaust manifold that keeps the pusles from each cylinder seperate and helps spool the turbo faster is the important part..

getting something from a 2.0L Inline4 to work on a 2.0L Flat4 wouldnt be worth the effort.

or then again it might be really simple (but im sure someone would have done it by now)... im just speculating here.
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Old 02-07-2006, 04:37 PM   #3
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A big 16G is not a 400 whp turbo.
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Old 02-08-2006, 11:08 AM   #4
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Maybe this is a dumb thought, but I see the JDM twin-scroll STi spooling as quick as an EVO. Obvious advantage to a twin scroll setup. I also have seen people convert the USDM WRX to a JDM twin scroll setup w/ a vf37 or 37 turbo.

Is it feasible to set up a big turbo, like a green, with a twin-scroll setup? I'd imagine that this would be preferable to a standard one. Maybe too costly?
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Old 02-08-2006, 12:12 PM   #5
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Youíre not going to get the same results from this turbo that the EVO guys are getting. The main reason is that the turbo is about a yard from the manifold apposed to 6 inches. Another factor is that the Evo has an 8.8:1 compression ratio. Both of these will help create faster spool and put out more HP.

At the same time I would love to see what you can do wit that turbo. I Think I was reading it had a titanium turbine and compressor so it seems pretty cool. I hope you do it get great results from it.
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Old 02-08-2006, 12:37 PM   #6
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Quote:
Originally Posted by line
Youíre not going to get the same results from this turbo that the EVO guys are getting. The main reason is that the turbo is about a yard from the manifold apposed to 6 inches. Another factor is that the Evo has an 8.8:1 compression ratio. Both of these will help create faster spool and put out more HP.

At the same time I would love to see what you can do wit that turbo. I Think I was reading it had a titanium turbine and compressor so it seems pretty cool. I hope you do it get great results from it.
Not to mention the evo's heads, and the fact that most of the big whp cars run cams..
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Old 02-08-2006, 12:53 PM   #7
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No way that turbo would do 400 whp. My friend's evo just got tuned last week. He has hks 264 cams, fuel pump, larger FMIC, 3" catless TBE, O2 housing, Intake, IC pipes and some other stuff running 24 psi and hit 275 on a mustang dyno.
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Old 02-08-2006, 12:55 PM   #8
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Quote:
Originally Posted by Turn in Concepts
No way that turbo would do 400 whp. My friend's evo just got tuned last week. He has hks 264 cams, fuel pump, larger FMIC, 3" catless TBE, O2 housing, Intake, IC pipes and some other stuff running 24 psi and hit 275 on a mustang dyno.
You are going to say there is no way the 16g will do 400whp on an evo?

What year was your friends car? Was that buschurs dyno?

It has been done many of times..
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Old 02-08-2006, 02:33 PM   #9
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I suspect this was a pump fuel tune. I could see 400 on race fuel with cams and a hot tune sure. Number seems about right for Mustang Dyno and 91 octane however.
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Old 02-08-2006, 03:02 PM   #10
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Quote:
Originally Posted by line
Youíre not going to get the same results from this turbo that the EVO guys are getting. The main reason is that the turbo is about a yard from the manifold apposed to 6 inches. Another factor is that the Evo has an 8.8:1 compression ratio. Both of these will help create faster spool and put out more HP.

At the same time I would love to see what you can do wit that turbo. I Think I was reading it had a titanium turbine and compressor so it seems pretty cool. I hope you do it get great results from it.
I am exploring all turbochargers at this point, and want to so something unique. I have been looking for room around the engine bay besides the typical location to have the turbo. i was thinking possibly around where the stock airbox is, but plumbing would be hard to get there another possiblilty was putting it inside the bumper right to a front mount and up..........i might even go as far as making my own intake mainfold, or modifying the stock one to have the throttle body face foward.

The whole idea behind it is to be unique, a front mount, and have the shortest plumbing possible. the evo turbo location and plumbing is definate advantage over ours, as for charge cooling and minimum pressure loss. There is alot of lag with typical front mount setups on subarus, they have what 10 feet plus of plumbing?

Another side note is that this wont be on a stock wrx motor for long, i have over 100k on my block which has been boosted 20psi+ for about 50k...and the rings are taking their toll

-mikey
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Old 02-08-2006, 03:52 PM   #11
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Quote:
Originally Posted by mcu81
I am exploring all turbochargers at this point, and want to so something unique. I have been looking for room around the engine bay besides the typical location to have the turbo. i was thinking possibly around where the stock airbox is, but plumbing would be hard to get there another possiblilty was putting it inside the bumper right to a front mount and up..........i might even go as far as making my own intake mainfold, or modifying the stock one to have the throttle body face foward.

The whole idea behind it is to be unique, a front mount, and have the shortest plumbing possible. the evo turbo location and plumbing is definate advantage over ours, as for charge cooling and minimum pressure loss. There is alot of lag with typical front mount setups on subarus, they have what 10 feet plus of plumbing?

Another side note is that this wont be on a stock wrx motor for long, i have over 100k on my block which has been boosted 20psi+ for about 50k...and the rings are taking their toll

-mikey

Sounds great I too have been trying to think of ways to shorten the distance from the heads to the turbo and maintain a short intake path as possible. My exploring has been put on hold now that winter has decided to show up. Iím very interested in what your doing and hope you keep me and the rest of the community updated.
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Old 02-08-2006, 04:47 PM   #12
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Quote:
Originally Posted by Capt Crunch
A big 16G is not a 400 whp turbo.
my friends stock turbo evo dyno'd 350 whp @ 21 lbs on pump at AMS. 28 psi and race gas should easily net 400+whp.
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Old 02-08-2006, 05:29 PM   #13
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Quote:
Originally Posted by SubasaurusWrex
my friends stock turbo evo dyno'd 350 whp @ 21 lbs on pump at AMS. 28 psi and race gas should easily net 400+whp.
Maybe, but it will never be a 400 whp turbo on a Subaru.
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Old 02-08-2006, 05:35 PM   #14
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Quote:
Originally Posted by Capt Crunch
A big 16G is not a 400 whp turbo.
Sure about that? Link below:
http://forums.evolutionm.net/showthread.php?t=178736

Don't waste your time with the evo 16g turbo, like others have said its not worth all that hassel. You are far better off with a subaru specific turbo like the db or fp 18g/20g.

Last edited by fastwrx006; 02-08-2006 at 05:44 PM.
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Old 02-08-2006, 10:00 PM   #15
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Capt means not an a Subaru and he is right. Everyone knows Evo's make more power with less hardware. Yes, it is a better platform.

As far as location, think real hard it will come to you. There is only one option that is significantly different but it would take some work and there are exhaust challenges. In general you have to cross over with exhaust and then you have the exhaust pulse issues. The better way to plumb exhaust is the hard way and the easy way is probably not worth doing.
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Old 02-09-2006, 11:29 PM   #16
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Quote:
Originally Posted by ebeck
Capt means not an a Subaru and he is right. Everyone knows Evo's make more power with less hardware. Yes, it is a better platform.

As far as location, think real hard it will come to you. There is only one option that is significantly different but it would take some work and there are exhaust challenges. In general you have to cross over with exhaust and then you have the exhaust pulse issues. The better way to plumb exhaust is the hard way and the easy way is probably not worth doing.
easy way? haha, I want it to be unique. i dont think you can put those 2 words in the same sentance and make sense with it. There are many possible locations to put the turbo, depending on what you want to move. Theres plenty of room where the airbox is as but getting the exhaust up there would not be fun. Somewhere underneath could also be explored as well or removing a fog light, having the turbo run right into a i/c and up to the throttle body.......

-mikey
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