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

Might change turbo to VF34, would i notice a difference in power?

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Old Jan 2, 2005 | 09:05 PM
  #31  
UK n00b's Avatar
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Originally Posted by Krinkov
no and either was mine, both were UTECs at the time. Though my point was that you could tune a ported VF34 and make power just like any other, I guess the point that you were trying to make was that the Ecutek could not control boost whereas the UTEC could(?) which is even more absurd. The UTEC uses the factory boost solinoid just like when tuning with an Ecutek, so anything the UTEC can do the Ecutek can do, if anything I would put the Ecuteks boost control over the UTEC since the UTECs is static and the Ecutek can adjust for conditions just like stock.
Ahh, but the UTEC uses the ABC which is like having a adjustable pill so you should be able to get around most poor boosting problems with it.

Your dead on regarding the static control though, I would much rather use the stock system (EcuTek) than the UTEC.

Mike
Old Jan 2, 2005 | 09:06 PM
  #32  
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Originally Posted by Krinkov
Oh Mike you tease!:banana:
Knew you would like that, haha

Mike
Old Jan 2, 2005 | 09:10 PM
  #33  
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Talking

Originally Posted by UK n00b
Yea the 20g is a pretty decent turbo, you'll need the injectors for sure. I recommend the Perrin ones, they seem to work really well and are very easy to work with from the tuners standpoint. Another turbo that seems to perform well (on 91 pump) is the SR40, a little pricey new but if you can get one used they are decent. We have a customer who makes 317whp and 332ftlbs at 20psi. If you want to go all out then perhaps a GT30 turbo would be good, we have one making 340whp or so that we are still working on (in fact I still have it strapped to the dyno right now ).

Mike
SR40 i'll have to look into that one, I wouldn't buy a used one possible troubles although the turbos that I sold VF22 and 34 from my 02 WRX were in really good shape. I picked the 20g because I heard good things about it and where I go thats what they recommend. That drive up north is a little too far for me, too bad for me.
Old Jan 2, 2005 | 09:15 PM
  #34  
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Thumbs up

Originally Posted by Krinkov
no and either was mine, both were UTECs at the time. Though my point was that you could tune a ported VF34 and make power just like any other, I guess the point that you were trying to make was that the Ecutek could not control boost whereas the UTEC could(?) which is even more absurd. The UTEC uses the factory boost solinoid just like when tuning with an Ecutek, so anything the UTEC can do the Ecutek can do, if anything I would put the Ecuteks boost control over the UTEC since the UTECs is static and the Ecutek can adjust for conditions just like stock.
Maybe Now but not at the time the bug had to be worked out look it up its in writing. you no the site, i'm out catch up later.
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