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

Engine mods. What you think?

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Old Mar 8, 2012 | 04:18 PM
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Yea this will be my daily driver I just wanna have enough power to play with. So final decision 255 fuel pump vf series turbo larger tmic DW 1000cc catless dp and an e85 tune?
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Old Mar 8, 2012 | 04:43 PM
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Originally Posted by LOL VTEC
All VF series can hit 300whp with the right mods and of course E85. Without the juice you'll be happy you made 270whp.
The VF-40/46 Legacy 05-09 turbo cannot reach 300 :/ well maybe at a ridiculous amount of boost but not near safely at all.
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Old Mar 13, 2012 | 12:16 PM
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Originally Posted by paullawalla
Yea this will be my daily driver I just wanna have enough power to play with. So final decision 255 fuel pump vf series turbo larger tmic DW 1000cc catless dp and an e85 tune?
This is a great setup. We're actually doing exactly this with a 2007 WRX today. Installing a VF39, 1000cc injectors, Walbro pump, Hallman MBC and tuning it on E85

-- Ed
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Old Mar 13, 2012 | 12:27 PM
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Originally Posted by EQ Tuning
This is a great setup. We're actually doing exactly this with a 2007 WRX today. Installing a VF39, 1000cc injectors, Walbro pump, Hallman MBC and tuning it on E85

-- Ed
That's an easy 300whp
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Old Mar 13, 2012 | 01:36 PM
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Originally Posted by LOL VTEC
The lowest injectors you can go for e85 are 850cc. You can ride on those no problem. Plus a 255 fuel pump and tune. Done. I can't begin to explain the +'s to E85
majory downside right now is price.

It used to be a lot cheaper than premium... now its almost the same. And ou burn thru fuel faster

faster burn = more times filling up
more times filling up = more money
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Old Mar 13, 2012 | 03:07 PM
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Originally Posted by LOL VTEC
That's an easy 300whp
300 should be very easy... 325whp is about average.

-- Ed
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Old Mar 13, 2012 | 03:15 PM
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Originally Posted by stupidchicken03
majory downside right now is price.

It used to be a lot cheaper than premium... now its almost the same. And ou burn thru fuel faster

faster burn = more times filling up
more times filling up = more money
True... but race gas is still much more expensive

-- Ed
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Old Mar 13, 2012 | 03:36 PM
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Car Info: 2002 wrx wagon
How about my future setup?
Helix 3" TBE
Helix 3" DP
COBB up pipe/headers
COBB pulleys
VF39 turbo
Sti tmic
255 fuel pump
Sti pink injectors
Tuned 91
What do you guy think?
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Old Mar 13, 2012 | 04:47 PM
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From: on the way to lake tahoe to shread! turbo beast
Car Info: 2016 WRX, 2014 lifter forester XT, 2005 JDM207 WGN
270/315 e85 330/400
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Old Mar 13, 2012 | 04:53 PM
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Originally Posted by 04caliwrx
270/315 e85 330/400
He has an EJ205. wtq numbers will be low, even on e85.
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Old Mar 13, 2012 | 04:55 PM
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Did not see that, so 320/345
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Old Mar 13, 2012 | 05:13 PM
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Originally Posted by 04caliwrx
Did not see that, so 320/345
you've had a 2.5 for too long. I'm thinking mid 2xx's for whp and wtq tops on 91 and pink injectors
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Old Mar 13, 2012 | 05:21 PM
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I'm talking about e85fool
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