Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

Turbo upgrade (good for 300whp+ on '06 WRX)?

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Old May 7, 2007 | 02:16 PM
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undfndwrx's Avatar
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Turbo upgrade (good for 300whp+ on '06 WRX)?

Please help!!! Im looking to buy a turbo....But, I do not want some big *** tranny breaking turbo. I want something streetable like the VF34... Is that a good turbo upgrade????? Please lmk!!!!

Thanks...:davis6:
Old May 7, 2007 | 10:34 PM
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Originally Posted by undfndwrx
Please help!!! Im looking to buy a turbo....But, I do not want some big *** tranny breaking turbo. I want something streetable like the VF34... Is that a good turbo upgrade????? Please lmk!!!!

Thanks...:davis6:
dude..you need to set your goal. wat did you want to do? wat power levels do you want??
Old May 8, 2007 | 12:22 AM
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At least 3xx to the wheels!!! Can the VF34 do that???? Plus I want reliability too...
Old May 8, 2007 | 01:13 AM
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search around man you will find great info on this subject
Old May 8, 2007 | 05:50 PM
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i dont think vf34 will do 300whp, unless it has good supporting mods, including front mount, injectors, fuel pumps, i would recommend to port your headers and add a crosspipe (much cheaper than buying a headers itself) plus its reliable compare to after market ( will crack overtime), AND you gotta a very good tune. just my 2 cent
Old May 9, 2007 | 11:03 AM
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dude, worry less about numbers, and more about how you want the car to drive. Do you want early boost with good torque early and decent pull through the powerband? Do you want big power after 4k RPMs all the way to redline? How do you drive your car?

If you want reliability, I would get a VF-22, 34, or 39. You will need a walbro, and an STI topmount would help. Ported manifolds do or do not help depending which tuner/shop you talk to, but they are by no means required. Same with a crosspipe.

A good tune is DEFINATELY required.
Old May 10, 2007 | 09:38 AM
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you should be able to hit 300 on the vf34. I did 334 on a 100 octane tuesday over at harman motive
Old May 10, 2007 | 07:30 PM
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Originally Posted by pbtypes
you should be able to hit 300 on the vf34. I did 334 on a 100 octane tuesday over at harman motive
What is your mods????:sprite-chimera-vile
Old May 11, 2007 | 10:34 PM
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TD05-18G-8CM! This is the turbo that you want, of course other will say something else but this is my personal choice

SUper
Old May 11, 2007 | 10:35 PM
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https://www.i-club.com/forums/engine-power-ej25t-sti-2006-wrx-90/06-wrx-18g-dyno-results-156920/
Old May 15, 2007 | 08:52 PM
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I would personally not bother with the VF34 on your setup, if your looking for something like that then perhaps look to get a used vf39 and STI TMIC from a STI owner upgrading and you'll be set for less than the price of the VF34.

A really good turbo on your car would be a TD06-18G which will have decent spool with conciderable top end gains, you will need a larger TMIC but the stock STI would work well.

Ported manifolds with Injen crosspipes will help for sure and will not crack (we run this setup on our race car and I am not telling you how much heat they see )

Mike
Old May 28, 2007 | 08:48 PM
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here is my dyno sheet
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