Subaru Turbo information

TheNailman

TheNailman

Warcock
Copypasta content from nasioc, more info can be found here. http://forums.nasioc.com/forums/showthread.php?t=1141476. List compiled by nasioc member : WRXRallyBlue

Mitsubishi TD04L-13T

(390cfm at 14.7psi, 200-275whp, Bolt-On)

This is the standard equipment turbocharger used on the USDM Subaru Impreza WRX. It can be found on all the current model years from 2002-2007.

Expect to achieve full boost with the proper mods and a quality tune between 2500-3000rpms.

IHI VF10

This is the standard equipment turbocharger used on the USDM Legacy 4EAT MY91-94. No other information known at this time.

IHI VF11

This is the standard equipment turbocharger used on the USDM Legacy 5MT MY91-94. No other information known at this time.

IHI VF12

This is the standard equipment turbocharger used on the JDM Legacy RS MY89-93. No other information known at this time.

IHI VF13

This is the standard equipment primary turbocharger used on the JDM Legacy MY93-95. No other information known at this time.

IHI VF14

This is the standard equipment secondary turbocharger used on the JDM Legacy MY93-95. No other information known at this time.

IHI VF18

This is the standard equipment primary turbocharger used on the JDM Legacy MY96. No other information known at this time.

IHI VF19

This is the standard equipment secondary turbocharger used on the JDM Legacy MY96. No other information known at this time.

IHI VF20

This is the standard equipment turbocharger used on the JDM Legacy MY97. No other information known at this time.

IHI VF22

(490cfm at 18.0psi, 250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the JDM V3 Subaru Impreza WRX and optional on the JDM Subaru Impreza WRX STi 22b. Of all the IHI models, the VF22 has the largest potential for peak horsepower, and is capable of supporting the highest boost levels. It is capable of running up to 25 psi. The VF22 is a roller bearing turbo that utilizes the P20 exhaust housing.

Expect to achieve full boost with the proper mods and a quality tune between 3200-3700rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

IHI VF23

(388cfm at 18psi, 250-325whp, Bolt-On)

This is the standard equipment turbocharger used on 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.

IHI VF24

(425cfm at 18psi, 250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the JDM V4 Subaru Impreza WRX STi. This turbo shares its compressor housing with the VF23, however, this housing is mated with a smaller (P18) exhaust side. The smaller characteristics of this turbo allow it to provide ample bottom end power and quick spool. This turbo is very popular for Imprezas with automatic transmissions and Group-N rally cars.

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.

IHI VF25

This is the standard equipment primary turbocharger used on the JDM Legacy B4. Utilizes a thrust-bearing design and a P12 exhaust housing. No other information known at this time.

IHI VF26

(400cfm at 18psi)

This is the standard equipment primary turbocharger used on the JDM Legacy B4. Utilizes a divided thrust-bearing design and a B14 exhaust housing. No other information known at this time.

IHI VF27

(420cfm at 18psi)

This is the standard equipment secondary turbocharger used on the JDM Legacy. Utilizes a ball-bearing design and a P18 exhaust housing. No other information known at this time.

IHI VF28

(425cfm at 18psi, 250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the JDM V5 Subaru Impreza WRX STi.

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.

IHI VF29

(425cfm at 18psi, 250-325whp, Bolt-On)

This is the standard equipment turbocharger on the JDM V6 Subaru Impreza WRX STi. The VF29 is nearly identical to the VF24, with the same compressor and exhaust housings. However, the compressor wheel in the VF29 has been changed slightly. The changes made to the compressor wheel in this model are generally viewed as improvements, and as such, this unit is typically chosen over the VF24. Has a different location for the pressure hose on the wastegate actuator.

Expect to achieve full boost with the proper mods and a quality tune between 2900-3300rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

IHI VF30

(460cfm at 18psi, 250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the JDM V7 Subaru Impreza WRX STi. The VF30 is a thrust-bearing turbo that utilizes the P18 exhaust housing of a VF24 and the compressor housing sized between a VF23 and a VF22.

Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

IHI VF31

Utilizes a P11 exhaust housing. No other information known at this time.

IHI VF32

This is the standard equipment primary turbocharger used on the JDM Legacy. It utilizes a ball-bearing design. No other information known at this time.

IHI VF33

This is the standard equipment primary turbocharger used on the JDM Legacy. It utilizes a P11 exhaust housing and a divided thrust-bearing design. No other information known at this time.

IHI VF34

(460cfm at 18psi, 250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the JDM V7 Subaru Impreza WRX STi Spec-C. The VF34 is nearly identical to the VF30 but has improved spool up due to its roller bearing design. It also utilizes a P18 exhaust housing.

Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles.

IHI VF35

(425cfm, 250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the JDM Subaru Impreza WRX. The VF35 is similar to the VF34. It utilizes the same compressor housing and the same compressor inducer size. The differences are in the divided thrust-bearing design and the P15 exhaust housing. This allows the VF35 to spool slightly quicker than the VF34 at the cost of less top-end performance.

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.

IHI VF36

(430cfm, 250-325whp, Modification Required)

This is the standard equipment turbocharger used on the JDM V8-V9 Subaru Impreza WRX STI Spec-C Type RA. The VF36 is a twin-scroll turbocharger that utilizes a ball bearing design, a P25 exhaust housing, and Titanium (possibly TiAl?) compressor wheel for improved spool. It is essentially a fast spooling VF34.

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.

IHI VF37

(430cfm, 250-325whp, Modification Required)

This is the standard equipment turbocharger used on the JDM V8-V9 Subaru Impreza WRX STI. The VF37 is a twin-scroll turbocharger that utilizes a thrust bearing design and a P25 exhaust housing. It is essentially a fast spooling VF30.

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.

IHI VF38

The VF38 is a twin-scroll that utilizes a Titanium turbine and shaft. This turbocharger yields tremendous spool-up but offers less top-end than the VF36/VF37. The spool capabilities of this turbo are demonstrated on the JDM Legacy GT, which reaches peak torque at 2400RPM.

 
IHI VF39

(250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the USDM Subaru Impreza WRX STI. It can be found on all model years from 2004-2006. The VF39 utilizes a thrust bearing design and the P18 exhaust housing.

Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles that utilize this turbo aftermarket. Though they are prone to cracking, VF39’s can be had for very cheap if bought used.

IHI VF40

This is the standard equipment turbocharger used on the USDM Subaru Legacy GT. It can be found on all the current model years from 2005-2006.

IHI VF41

This is the standard equipment turbocharger used on the JDM Subaru Forester STI. It utilizes a P18 exhaust housing.

IHI VF42

This is the standard equipment turbocharger used on the JDM Subaru Impreza WRX STi S203 and S204. The VF42 features a twin-scroll design with a slightly larger compressor than the VF36/VF37 turbos and different turbine design (more blades). The VF42 is a roller-bearing turbo and is similar in size to the VF22 turbo, but the twin-scroll exhaust housing yields faster spool-up and a superior top-end.

IHI VF43

(250-325whp, Bolt-On)

This is the standard equipment turbocharger used on the MY07 USDM Subaru Impreza WRX STI. It can be found on both base STI's and STI Limited's. The VF43 utilizes a thrust bearing design and the P18 exhaust housing. The primary difference between the VF43 and the VF39 used previously on STI's seems to be the stiffness of the wastegate. The VF43 has a stiffer wastegate designed to reduce boost creep issues.

Expect to achieve full boost with the proper mods and a quality tune between 3000-3500rpms. 2002-2005 WRX owners will need fuel upgrades for this turbocharger and proper engine management is highly recommended for all vehicles that utilize this turbo aftermarket.

IHI VF46

This is the standard equipment turbocharger used on the USDM Subaru Legacy GT MY07. The VF46 utilizes a new five-arc scroll design to improve low and midrange performance over the previous VF40.

 
That`s a great list that explains a lot. Now if we can get the info on the 47s to 52s. I believe mine is a VF47. Good find Phil.
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yah.... 48 is the sti turbo....

the 52 is the 09wrx turbo. its all vf48 on the interior, crammed into a legacy friendly casing.

 
Your turbo already has a wastegate. If you are talking external wastegate. I would say not really needed for that turbo.

 
While an EWG setup is by no means NEEDED on a Td04 WRX, it not unheard of. There are a couple threads on NABISCO discussing the subject. And with the added boost control, etc offered by an ewg setup, people HAVE seen noticable gains in WHP & WTQ.

That being said. Due to the expense of an ewg setup, and the tuning required to get the most out of the setup, I believe that money could be better spent.

 
That being said. Due to the expense of an ewg setup, and the tuning required to get the most out of the setup, I believe that money could be better spent.
Click to expand...
BINGO!!!!

 
Whaaaaa???? You must be talking about a blow off valve. That has nothing to do with your wastegate. Might want to do a little research on that stuff first. Putting on a BOV is really not needed, and in fact most say it hurts your performance.

 
nope not a bov my friend has a triangle thing on his srt 4 and it goes in between the wastegate it looks like a spacer wit holes in it

 
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