VF34 vs. Port and Polish
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Joined: Apr 2003
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From: LIC Motorsports
Car Info: 2004 Black/Gold STi
VF34 vs. Port and Polish
Well here is my delima, I want to get a Helix DP but need to get the stock turbo ported otherwise I will get boost creep. My question is: is it worth it to pay $200 to get the thing ported or should I just invest in a new turbo. I was looking at the VF34. However Ill have to wait a long time to save up for a new turbo. What do you all think?
from what i experience the port and polish didnt cure the problem i still had boost creep after the port and polish. I had a tbe before and after the port and polish. Spend the money towards a ebc that has made the most difference to me. Maybe the port and polish has helped a bit but not enough to cure boost creep.
here is more info about port n polishing my vf39 with pics also more discussion about turbos in another thread. https://www.i-club.com/forums/showthread.php?s=&threadid=45085
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
Hey Justin
You didn't have any boost creep when you had my Port~n~Polish VF30 on your STI though.
You didn't have any boost creep when you had my Port~n~Polish VF30 on your STI though.
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From: LIC Motorsports
Car Info: 2004 Black/Gold STi
I know boost creep doesnt completely go away. When you free up exhaust flow that is to be expected. I guess what I am wondering is if a port and polish will keep my car from getting so bad that it will hit boost and fuel cut. Or should I just save up for a new turbo?
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Port the wastegate and do not touch the rest of the exhaust side. It's worked for me and a couple of other STi's that have been done locally. 100% cured creep, back to stock boost levels. Now, if you port the exhaust side you make it easier for the air to flow though the turbine when the wastegate it fully open which results in more boost creep.
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Car Info: 2004 Subaru STI/WRX Silver of course
Buy a different DP, get one that's not a bellmouth there are people running TBE on STI's and are not getting boost creep. Mach5WRX in the Hawaii forum has a PDE DP and has had a total of three different exhaust's one stock and two aftermarket and has a manual boost controller and has had no boost creep. But if you want to P&P your turbo contact this guy..
-Cameron Urano
DPP Motorsports
camz911@hotmail.com
972.386.9470
He said there is no wait they have turbo's sitting around so only down time is removel and installation..
-Cameron Urano
DPP Motorsports
camz911@hotmail.com
972.386.9470
He said there is no wait they have turbo's sitting around so only down time is removel and installation..
Last edited by silver satin; Mar 28, 2004 at 10:19 PM.
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From: Flying on the H1 w/ 75 psi of compression on all 4 cyl
Car Info: PnP VF30 w/ STi injectors Perrin intake walbro fuel pump w/ a TXS TBE
I swear that is just so weird how a little diverter ,makes a huge difference, but hey it works :banana:
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From: Reno, NV
Car Info: 1993/2000/2001 GF4 mostly red
Re: VF34 vs. Port and Polish
Originally posted by SlickmisterN
... My question is: is it worth it to pay $200 to get the thing ported or should I just invest in a new turbo? ...
... My question is: is it worth it to pay $200 to get the thing ported or should I just invest in a new turbo? ...
Thread Starter
Registered User
Joined: Apr 2003
Posts: 1,019
From: LIC Motorsports
Car Info: 2004 Black/Gold STi
Yeah, thats all Im really looking for, just a few bolt ons and engine management. Nothing too crazy. And if I ever get bored with that Ill just get a bigger turbo. Thanks for all the help guys, Im going to be looking into divorced wastegates? Any suggestions?


