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Old 09-29-2012, 06:59 PM   #1
AspirinWhite
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Member#: 90982
Join Date: Jul 2005
Location: Glendale, CA
Default vf28 replacement

I'm currently running a gc8 with ver 5 sti set up and my stock turbo, which is vf28, seems to be on its way out.

I'm having some difficulty finding a replacement vf28 so I'm trying to see if any other turbo is compatible as a replacement without tuning it. If the turbo has same a/r, will it be the same thing?
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Old 09-30-2012, 02:30 PM   #2
kleinkid
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Member#: 27091
Join Date: Oct 2002
Chapter/Region: NWIC
Location: Oak Harbor, Wa.
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2010 STi SE
DGM

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How about a v-23. I bought one in 2008 directly from APEXi at their offices in Orange CA, several years ago. They were going to use them in a turbo conversion kit for na Impreza, but canceled the program. Their part number 705-F002. PM me and I will give you the phone number, price I paid.
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Old 10-01-2012, 01:17 AM   #3
i_c_the_light
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Location: New Zealand
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1994 Legacy
"The Silver Slug"

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Quote:
Originally Posted by AspirinWhite
I'm currently running a gc8 with ver 5 sti set up and my stock turbo, which is vf28, seems to be on its way out.

I'm having some difficulty finding a replacement vf28 so I'm trying to see if any other turbo is compatible as a replacement without tuning it. If the turbo has same a/r, will it be the same thing?
You can quite literally run almost any bolt on turbocharger on a v5 without a tune.
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Old 10-01-2012, 11:39 AM   #4
eg33GC
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99 V4
EJ20K RS

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Quote:
Originally Posted by i_c_the_light View Post
You can quite literally run almost any bolt on turbocharger on a v5 without a tune.
The late 90s Denso ecus are regarded as being extremely tempermental and inflexible, and nothing similar to their older JECS counterparts where you can run a ton of VE changing mods within reason.

The Brits have a real distaste with these computers.
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Old 10-01-2012, 01:15 PM   #5
Marnix
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1984 AM5, 1994 BC4,
2010 BR5

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Yep especially V5-6 need to be mapped after installing a different turbo or FMIC. The best are the 1988-1996 Legacy RS & WRX V1-V2 ECUs.
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Old 10-01-2012, 04:40 PM   #6
i_c_the_light
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Quote:
Originally Posted by eg33GC View Post
The late 90s Denso ecus are regarded as being extremely tempermental and inflexible, and nothing similar to their older JECS counterparts where you can run a ton of VE changing mods within reason.

The Brits have a real distaste with these computers.
My bad then. Holy **** that is just another reason to stay phase I.
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Old 10-02-2012, 06:41 AM   #7
Marnix
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2010 BR5

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I might go Phase II next but that will have 2 cylinders extra
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