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Old 04-26-2007, 06:32 PM   #151
WRXRallyBlue
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The 4g63 is way different than our engines. Different heads, shorter exhaust paths, stronger engine means you can push the tune harder, etc.
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Old 05-07-2007, 01:41 AM   #152
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Quote:
Originally Posted by WRXRallyBlue View Post
Why did you run less boost on the meth/water map?
stock bottom end, the rods wouldnt take any more torque reliably.
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Old 05-15-2007, 04:39 PM   #153
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VF-46 is the new turbo used on the MY07 USDM Legacy GT and spec. B. As quoted from legacygt.com,

"the VF46 is the world's first 5-arc scroll turbo. This new design has been adopted for the turbocharger compressor. By adjusting the flow of compressor air and improving compression efficiency, low and midrange torque has been increased/improved."

http://legacygt.com/forums/showthread.php?t=61765
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Old 05-15-2007, 04:48 PM   #154
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EJ motors aren't a **** in the wind compared to the 4g63. Same turbo will produce significantly less power (and later most times) on the EJ (big16's typically make 290-325 on ej205's while they can crack 400 on the 4g). Exhaust path is MUCH longer and internals not as strong (wrx).
Quote:
Originally Posted by Tank. View Post
Originaly coming from the DSM camp (still own one) and all of my friends have high hp evo's I don't understand why a lot of these turbos seem to make so much less hp on the suby 2.0. Any fairly indepth explanation would be great. Thanks.
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Old 05-16-2007, 02:44 AM   #155
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Quote:
Originally Posted by subawang View Post
VF-46 is the new turbo used on the MY07 USDM Legacy GT and spec. B. As quoted from legacygt.com,

"the VF46 is the world's first 5-arc scroll turbo. This new design has been adopted for the turbocharger compressor. By adjusting the flow of compressor air and improving compression efficiency, low and midrange torque has been increased/improved."

http://legacygt.com/forums/showthread.php?t=61765
Thanks. I'll do a couple updates here in the near future. I have to rebuild my pc at home - mobo is quickly dying on it
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Old 05-16-2007, 05:35 AM   #156
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...and we have found Unabomber's protege...
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Old 05-18-2007, 10:30 PM   #157
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very useful information, thank you op
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Old 05-19-2007, 03:40 AM   #158
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I made a couple updates
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Old 05-19-2007, 10:13 PM   #159
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sorry JusT a Totall Noobie Here... But how Do u Tell what Turbos are Bigger than Others and Are Right for Ur Set up?

i Got this Guy thats Tryin to Sell a VF27 for a few hundred... is that better than a Stock Td04?
oh and he has a Vf25 aswell that he had hooked up on a TwinTurbo Ap on his Wrx...
Should i Not even Waste my Time?
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Old 05-19-2007, 10:31 PM   #160
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pm responded
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Old 05-31-2007, 01:00 PM   #161
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IHI VF23
(388cfm at 18psi, 250-325whp, Bolt-On)
This is the standard equipment turbocharger used on the JDM MY95 Subaru Impreza WRX STi and the JDM Subaru Impreza WRX STi 22b. The VF23 is a ball bearing turbocharger that utilizes the P20 exhaust housing like the VF22. This housing is mated with the smaller compressor housing of the VF24 for fast response and excellent low and mid-range performance. It does not have the same top end power of the VF22, but spools up slightly quicker.
Expect to achieve full boost with the proper mods and a quality tune between 2800-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

This is the first ive heard of this, AFAIK all ej20g's came with TD05-16G's except the wagons and autos.
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Old 06-01-2007, 01:27 AM   #162
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Find definitive proof that contradicts what I wrote and I will update it.
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Old 06-01-2007, 12:52 PM   #163
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http://www.grahamberry2.co.jp/impreza_gc8/index.html

If you want more definitive proof and you can read japanese its all in the GC8 bible. Or google ej20g td05 then google ej20g vf23, or go into the pre-02 factory turbo forum and take a quick peek.
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Old 06-01-2007, 03:47 PM   #164
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It says it uses this: IHI RHF5HB, which is a VF designation.
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Old 06-01-2007, 04:36 PM   #165
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thnx for the info. helps with a lot of unanswerd Qs
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Old 06-01-2007, 04:42 PM   #166
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Quote:
Originally Posted by WRXRallyBlue View Post
It says it uses this: IHI RHF5HB, which is a VF designation.
Correct, thats for the Ver 3/4 EJ20K. A Ver 1/2 is an EJ20G that uses a td05.
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Old 06-02-2007, 04:27 AM   #167
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I misread it.
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Old 06-04-2007, 07:03 PM   #168
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Just for completeness, you may want to add the IHI VF45 to the list.

The IHI VF45 is a ball bearing twinscroll turbo that replaces both the IHI VF38 (5AT) and the MHI TD04HLA-19T (5MT) turbo for the JDM LGT starting with MY06. The IHI VF45 is similar in size to the IHI VF38 but supposedly flows as much as the MHI TD04HLA-19T in the top end.

The external appearance of the VF45 compressor cover resembles the VF46 compressor cover, but it is unclear if it shares the same 5 arc cross section as the VF46 cover.

http://legacygt.com/forums/showthread.php?t=51207
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Old 06-05-2007, 02:30 AM   #169
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Thanks.
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Old 06-06-2007, 11:56 AM   #170
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Love this list, I must've referenced it 100 times in the past couple months.
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Old 06-06-2007, 10:52 PM   #171
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I'm glad it helped!
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Old 06-07-2007, 04:53 AM   #172
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dont know if this is the right place to ask but does anyone know if the Evo IX Twin Scroll 16G 10.5 would directly bolt on to a 02? the guy selling it said id need a custom uppipe...?
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Old 06-07-2007, 04:58 AM   #173
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Quote:
Originally Posted by MOBBiN View Post
dont know if this is the right place to ask but does anyone know if the Evo IX Twin Scroll 16G 10.5 would directly bolt on to a 02? the guy selling it said id need a custom uppipe...?
If that turbo bolted on, everybody would have them!
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Old 06-07-2007, 05:17 AM   #174
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yea just found all the info i needed right afteri posted. < n00b thanks.
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Old 06-08-2007, 08:17 PM   #175
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very interesting to see what kind of turbo's are available for you subie owners, props to the people who put this together

Kyle
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